Under the Hood of the Fastest Bike in the World
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- čas přidán 27. 03. 2016
- In September 2015, Aerovelo's Eta Speedbike set a new world record in human powered speed by going 139.45 km/hr (86.65 mph). Visit www.aerovelo.ca for more details.
This video takes a look under the hood at the team and the technology that makes Eta one of the most efficient vehicles on earth. - Věda a technologie
This is an amazing feat of enginering. Think if people could use parts of this technology on high speed bicycle lanes to change the way people commute in cities.
It's actually not so useful for cities, much more outside of cities. I ride the road going version of this daily, take a look at www.velomobileworld.com to see what's available (I have the Milan GT). My commutes are between 30 and 82 km at the moment, one distance I have on a longer distance (165 km); I usually stay overnight when I go there. Up to about 50 km distance, between cities in a metropolitan area, nothing beats a velomobile when it comes to travel time. Also, the scenery is better and my physical shape is as good as it was when I was 25. If you have questions, please reply! More than happy to answer :-)
Velomobiles
@@MrPilotStunts yes? people dont use them
@@z0uLess you think?
@@MrPilotStunts I know
Wow, 5 yrs ago I was watching vids of guys with homemade bikes like this trying to break the then record of 75mph. Must've come out with this bike just after that.
The title clearly says this is the fastest bike in the world. Why do people complain that it's not a practical bike for the average person? The average person won't ever use a Formula 1 race car for practical purposes either. Is that so hard to understand?
People rightfully complain out of frustration: this tech universities graduates' exercises don't solve personal mobility problems.
As for F1 races, it's human race stupidity in purest form - indulging mob wasting resources and damaging environment. F1 engineers employed to solve more practical problem would be more productive.
By pushing the envelope of what is possible they create things that can apply to all people. Race cars developed safety gear and crumple zones long before they were on average cars. Same thing with velomobiles and this bike.
Rob Neff I repeat in plain English:
we don't need wasteful activities like F1 races or wars to develop technology and if R&D in stupid fields get funded first and generously, that indicates stupidity of human species.
New application doesn't mean it couldn't be without original one. Contrary: reasonable application will be better and cheaper than combined spending including adaptation.
Digest my words and stop bother.
We see this field as a sport, and a lot of people out there believe sports / art / screwing-around-with-inventions is useless. You will not be able to convince them otherwise. They see themselves as the paragons of logic and utility, trying to save the world from the useless activities of passion, which, in my opinion, make life worth living.
Well said Victor. Competition, exploration, and as you say, passion is what led to much of what we enjoy today. I'm not a fan of wasting fuel or resources, but a world without this would be very boring indeed and sometimes leads to new ideas on efficiency.
Still trying to find a vid that details the steering limits. W/ the 93T main chainring overlapping the wheel it looks like only a few degrees of steering in either direction. So they start straight and better keep it straight because if you veer too much there is no room for recovery. Great piece of work and great results.
What about saving materials by using the aerodynamic shell as an structural element? what about an assymetric design that holds the wheels to the frame only from one side? And one more thing, would using the arms to drive the others whell be usefull?
Wow! Creo que se rebasará ese record muy pronto!
Excelentes cuestionamientos!
Amigo, tu vas más allá
This is very cool. And even if such a bike is unuseable in the traffic and daily life it shows the possible improvements of cycle efficiency by an aerodynamic design.
Even twice the air resistance of this bike is far less than with a standard time trial bike and would probably be fully useable for daily use. I think that is what the velomobil has.
Just a note: at 3:10 the tire definitely protrudes much more than 4mm, closer to 10-15mm.
Sideways it might very well be 4mm from the opening at the narrowest.
How does such a great video and channel have such a low popularity?
Low popularity is due to absence of practicality.
It's science. That scares off a lot of people. Plus there's no sexy ladies and nobody narrowly avoids dying, and the title isn't click-bait.
Science is discovering the laws of Nature. Application the laws is engineering products. Useful product has market i.e. interest. This "thingie" is a good engineered but useless artifact which defines little interest from the pragmatics.
I mean u can't ride it in city traffic nor off-road.
So, what's the fuss? I do wanna know why sooo many clicks?
I was searching for cute kitten tricks and somehow YT got me here. This is plain awesome getting peak performance from superb engineering, advanced materials, and astonishing athletic skills.
Good point,at some point in time AI will be used to design ultra efficient vehicles,the computer will be asked , to design a low drag bicycle,it will act as if mother nature is spending millions of years,slowly evolving the design,using natural selection,examining what works and doesn't work.. God only knows what possible.,Lets hope this technology ends up in narrow tracked commuter vehicles,.As of 2017,the most comfortable motorcycles can only produce around 40 mpg,they should be able to get 200 mpg trying to overcome all that air resistance requires a lot of power.
Amazing, I'll be looking forward to this in the future, now would be even better to just own, a beautiful piece of modern technology, that is fuel efficient, eco-friendly, and mesmerize to look at.
Congratulation! Great design!
What a beautiful efficient machine
Perhaps a 360 camera could be installed and have the rider use a VR headset to be fully aware of surroundings, instead of just being able to see in front?
thought about it, issue is of latency. We had to find a camera/screen combination that had minimum latency, so the rider could control the rather-twitchy bike. We only use it on empty, perfectly straight roads, so not much reason to look around.
I also can imagine trying to incorporate that into the design without it getting in the way would be a real pain.
And no real reason to see whats going on behind you ;)
as vr headsets gets better there might be light versions in the future. the application might not be needed for a speed record like this, but for other uses of this technology.
seems like soon to be a future sporting event too!
OK, that is one cool bike. But it is for only a small group of young people. I'd love something similar but it will have to accommodate a 67 year old man with physical limitations. I'd need a larger seat, and a way to view the streets ( there is no way I'd be allowed to drive with just a monitor to see with ) and I'd like a way that I could carry groceries home . I wait to see what you young folks can produce for my world. Please understand: I am totally impressed by what you accomplished. A BIG thanks for sharing this with everyone.
check out the lightning bikes and other unfaired recumbent bikes or trikes (ice trike, cattrike, etc). Lots of options out there for comfortable city riding.
They already said this is not for commercial use, the concept will be adapted to improve efficiency on bikes designed for daily use.
organictransit.com/
Thanks for that. I signed up for the newsletter.
How much is the drag coefficient of this car?
Looks like the ergonomics of the bike is the current limitation? With 258 W at 100km/h that gives us only 700W at 139 km/h. An elite cyclist can output up to 1100 W for short bursts, so why only 700W here?
For fun, let’s see the theoretical limit :)
1100 W in this bike would give a speed around 160 km/h.
I heard some study from University of New Mexico indicated that a 30% power increase could be gained if the rider uses both arms and legs for propulsion. That would mean around 10% higher maximum speed, so we are up to 176 km/h.
We also have the possibility to drive a heat engine off the human, theoretically increasing the power output by another 40% (assuming a body temperature of 37 C and an outside temp of 0 C) this would push the bike up to 197 km/h.
This assumes perfect efficiencies and a carnot heat engine, so I would guess that we are never going to break the 200 km/h mark... unless... We go to the moon! Then we don’t have any air drag and we can basically go as fast as we want! Yet another reason to go to the moon, we got world records to beat!
you have to take some other things into account, they are sacrificing power output that a regular road cycle position helps give those 1100w, when a road cyclist sprints he/she gets of the saddle to achieve that. here the laid back position helps aerodynamics tremendously as aero at this speeds is way more important than a lot of things including even weight, as you can see for the results (way higher speeds on the flat compared to a sprinter on a road bike, for way less watts), regarding additive power using your arms, that would also negate a bit of the aerodynamic shape and also add more weight but not sure if the trade would be worth it.
This is a balancing of factors and priorities act, its not a hotrod on which you just add stuff or tech and get more speed.
I like your thinking, and I have an answer for the first part of your suggestion. I ride a velomobile myself (Räderwerk Milan GT Mk6), running a 26" rear wheel (28-559), 11-30 cassette and a 65 tooth sprocket on the front. Fastest sprint until now was into low 80s (km/h), on 65-13 so somewhere around 140 rpm.
You mentioned an elite cyclist that can output 1100W: Probably you were referring to an elite endurance cyclist. My maximum short term power output is between 1500 and 2000W, and although I'm a type 2 muscle tissue guy, I'm far from elite.. elite track sprinters are best measured in kilowatts, haha.
The problem is not the power necessary to maintain 100 km/h (which is 258W), the problem is that you need a lot more than that power to actually get there. My Milan would also go past 100 km/h if I could only maintain 1500W long enough. I don't have my power curve at hand here but I guess in a full sprint I would be able to put an average of about 700W for a minute. There are formulas for this which I'll spare you, but let's take that 700W average and assume I can do a fairly linear 700W sprint; holding 70 km/h in my bike requires between 350 and 400W. To accelerate from 0-70 km/h in one minute (the time which I can hold the power) requires an extra 410W of power input. This actually checks out: From a standing start I can get to 60 km/h in about 18 seconds, but then I'm basically done. If I accelerate slower, I can pass 70 km/h before I run out of energy stocks. The only way to pass 80 km/h is to start my sprint when I'm actually already at a high cruise speed, for example riding 55 km/h, take some seconds to recover a bit (the velomobile is efficient, so before it's below 50 km/h will take long), and then put in a sprint that starts at about 400W and builds up intensity fairly quickly to compensate for the higher drag.
Concerning using arms and legs: Yes and no. It's much harder to steer if you need to use your arms to propel a vehicle. Might cause your legs to try to even out unbalance, therefor lowering the power output. I also own a rowing bike, and although it's easy to accelerate really hard on that thing, when I do I need the full width of the cycling path :-)
@@4nz-nl You are correct in your understanding of power. A lot of our power went into pure kinetic energy, so we had a keep a high level from begining to be able to accelerate to high speed. A final sprint was very good, but couldnt rely on it alone, since Todd would have no time to get enough power converted to kinetic energy. The correct power profile was quite interesting, we ran a few simulations with him in a trainer, to see whats the optimal profile he can achieve.
@@victorragusila7519 Of course, you actually did the math on what's the best curve to get up to speed. I would guess it's not possible to share that data, but am still hoping I'm wrong ;)
By the way, how does your bike respond to side winds? >> The Räderwerk Milan design is actually quite good at it, with it's three wheels and overhanging tail it sort of compensates it's own response to a sudden wind gust and wants to go more or less straight. I'd expect a two wheeler to be terrible in windy weather, is that a correct assumption?
Beacon of Wierd,
Your comment is very interesting and I want to share my thoughts.
You are right about the required power. With only 258w for 100km/h a higher speed than 139km/h could be achieved theoretically even by many random guys. I think the explanation here is that it takes a few minutes of acceleration to reach these speeds and at the moment of the reached speed the rider cannot put out more than ~700w.
It's similar to that a professional powerlifter/strongman should possibly be able to beat top speed velodrome records based on his maximum power output. But his muscles can only put out the extreme power for a few seconds and he will fatigue much faster than a cyclist before he reaches the theoretical top speed. The pro cyclist Filippo Ganna is measured to 608w for 4 minutes. An insane performance! I think it's pretty similar to the performance of this speed record. During the acceleration the rider needs to put out a high power for several minutes. For example 608w at 100km/h means 21N of driving force, which means a very slow acceleration. Which becomes slower the faster it goes and the increasing air resistance contributes even more to that. At the moment of reaching 139km/h even a pro cyclist will have hard to put out 608w, and 700w it's even more impressive.
Do you think that is a correct explanation?
The idea of adding the upper body for increased power is very interesting and there are actually a few bicycles with that design. It's especially useful in uphills but I think it's difficult to make it an advantage with a speed record like this. Adding pedals for the arms would uneviteable result in a less aerodynamic design of the vehicle. The question is if the added power will weigh up for that. Maybe slightly.
But I am sure 200km/h will never be reached. At least not by a single rider. But what about a tandem version!
And here an idea has come to my mind. Imagine a special designed pedal driven train on a special designed rail!
Then DOZENS of riders could be connected to each other in a chain. The relative air resistance would be several times lower than the recordsetting bike in this video. For sure 300km/h then would be achieveable.
how can we implement this technology into everyday consumer bicycles to improve their energy efficiency? That is a more interesting question to me than trying to hit an even faster world record. After all, beyond a certain point the rule of diminishing returns will apply.
velomobiles already exist, and they are pretty much as good as possible while staying practical. Main issue is at top speed they become quite unsafe. We run on empty roads, with nothing to hit. But trying to do 80+km/h on bike paths or city roads becomes very dangerous. Might as well get a motorcycle at that point.
@@victorragusila7519 A velomobile is actually safer than a motorcycle at speed. One large advantage is the feet-forward position - I prefer breaking a leg over my skull. Also, although I can sprint to 80 km/h I rarely ever do so; on trips with the highest average speed I rarely ever crack 60 km/h. Saving energy for long straights is essential for an efficient ride.
How does the rider keep from overheating if he does not have the slipstream to cool him?
He would definitely overheat if he rides for an extended period. I guess the limited time for this project is manageable.
The cycler should have more exposure, instead of the bike. It was thanks to his super-human effort.
So put him in a regular bike and ask him to get to 86mph. However, I'm pretty sure that another person with the same training could get this same bike there. See the difference?
They could reduce a small amount of weight by making the shell clear in the right spot for the front window and therefore eliminate the need for view screens and all related batteries, etc..
that would require a more upright position for the rider, this could be the reason they changed the window that they already had to a more streamlined and less tall shape. the angle the rider is in this iteration, his knees already practically block his view. Also at those speeds aero shape is way way more important than weight.
Where can I buy one
I wanna ride that bike do I bad.
Just hoping someone is still reading this... as mentioned in another comment, I am a velomobile enthusiast and rider (Räderwerk Milan GT Mk6). What I noticed in the Aerovelo design is that it basically has a partial carbon frame which is under the cover, which is exactly the opposite of what modern velomobiles have (for example the Milan GT, but also the Intercitybike DF XL, which is the most rigid feeling bike I ever owned). Why is this? Wouldn't using the shell as integral part of the structure make it a lot lighter and potentially more rigid, therefor make it easier to accelerate to record speed?
Weight is not the biggest concern for a bike which is trying to go very fast on flat ground. In theory, weight only increases the difficulty of accelerating, and the rolling resistance of the tires.
The most important factor is to have a *very* aerodynamic shell. That means the shell must have as few seams and openings as possible. It would be very difficult to work on the drivetrain if it was incorporated into the shell.
@@samthe1337man Of course! I know, as my daily driver is a Räderwerk Milan GT ;-)
Still, those (and all other modern production velomobiles) are a carbon monocoque; because it's more rigid, handles better and obviously is a lot lighter. Not only weight limits acceleration, rigidity of the bike does too, as you'll lose power in flex of the body. You will need acceleration because this record is not only about holding a certain speed, it's also about getting there in the first place.
"Settling for" a separate frame in a record bike that's designed from the ground up seems a weird choice because of this. Unless it also has advantages that I'm not aware of; This is why I was wondering why Aerovelo made this design choice :-)
You are correct.
Our 2011 and 2012-13 bikes, the Vortex and Bluenose, were a monocoque design. Worked well, but had a lot of issues while racing them:
1. Hard to work inside. Something always breaks, needs adjustment or fixing.
2. Hard to stage during the limited time we have to start. If we have a small opening, getting driver in and strapped down takes time, and they overheat if they stay in too long.
3. Most importantly, if we fall we scratch the fairing and have no chance for record. As such, the rear fairing was connected to the frame, but the front one could be easily replaced, and we had 2 of them. If one is scratched, we can race the other, and not waste a day of racing, while we fix them in the evening. Front fairing was also damped, so road vibrations wouldnt trigger laminar-turbulent transitions, but we are not sure how much of an effect that had.
Also, weight does actually matter quite a bit. A lot of our rider energy went into pure kinetic energy, so lower mass would help.
How is sufficient ventilation for the pilot achieved?
I was wondering this myself. How does he keep himself cool. You heat up quite abit when you are biking hard, and with no open air to cool you down. I wonder how he doesn't create a sauna effect.
That is why this was a "short" sprint, not a triathlon or long commute, and there are gaps in the bottom between the wheels and shell ;)
actually ventilation was a problem. We got a duct that draws air from behind the front wheel and directs it to the pilots face. The wheels are themselves surrounded by carbon shells, which are sealed to the main body shell, so there is as little airflow as possible . We can open and close the ventilation depending on what the pilot feels.
@@victorragusila7519 if you need only 258 watts to maintain 100 kmh, why we can not see similar commercial velomobiles achieving at least 1/4 of this?
I see some recumbent bikes with 3000 watts motors and still they don't reach more than 80 kmh.
What is the power output from the trained cyclist when it reach 140 kmh?
How much time it can sustain that speed?
@@AngelLestat2 not sure the exact power numbers Todd was able to put out...but I think it was around 500 to 700W for the final Sprint. He couldn't keep it there for too long at all, the power curve was all designed to reach max speed only over the 200m speed trap.
Aero drag and tire drag are hard for a three wheeled vehicle. They are much bigger and much less aerodynamic. Three tires will always scrub a bit, draining more power. I wouldn't be surprised to see a factor of 10 in the drag of a velomobile compared with the ETA bike. We also raced at high altitude, so air drag was even less than what a velomobile would see.
At low speed you don't see that drag, but at high speed it really kicks in.
Unfortunately the velomobile a do as good of a job as possible while keeping their bikes comfortable and easy to use.
My only concern is that the rider will be sweating in that bike. I mean why no windows?
Would it not have been easier, cheaper and lighter to incorporate a window into the hood or simply use clear plastic that use electronic monitors?
that would require a more upright position for the rider, this could be the reason they changed the window that they already had to a more streamlined and less tall shape. the angle the rider is in this iteration, his knees already practically block his view. Also at those speeds aero shape is way way more important than weight.
When I see these I ask myself how is it possible that they haven't been invented before the fuel powered motors; I think their mechanism is simpler than motors'
Maybe they was, but didn't got too much popularity, like in this case.
Newer materials allow for this to achieve this performance not only mechanical solutions, also those materials make the mechanical parts lighter and more streamlined adding efficiency, better aerodynamics studies are paramount as well.
Take also into account the practicalities of an ICE engine (internal combustion engine): you dont get tired, for one is a very important thing and you can carry more people and loads, practicality and usefulness makes a better investment.
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I guess the only way to go from here is to reduce the drag of the drive train.
You can make a better and colder surface and reduce weight, plus you can use the arms to drive the other wheel or use all 4 members to drive a single unicycle to reduce rolling drag, and they can also go full blind and remove the camera and the weight of the screens.
can it be used commercially for road driving,
would you WANT to sit in that?
You need a team to assemble it.
Expensive and fragile as hell.
Most likely uncomfortable and very hot on the inside.
It would need to be dramatically re-worked. For instance, the turning radius is really huge, it's only designed to go straight and fast. There's no way to put your foot down when coming to a stop, you need people to catch the velomobile and hold it up while you get in and out.
May I suggest a milan velomobile? Much more suitable for everyday driving (you still need a velomobile-friendly environment).
@@fiix7026 Any decent road design is velomobile friendly ;-) But depending on the exact situation, that Milan can be a good suggestion. It is really a bike for open road though, not really built for climbing. For faster acceleration, check out a DF. For a rigid and practical bike (with a childrens seat!) see the QuattroVelo.
@Name Surname: Check out www.velomobileworld.com
Cabin temp. control?
Можно доделать эту машину и она поедет ещё быстрей, упор на аэродинамику и более эффективный привод
Would adding golf ball dimples reduce drag and augment speed? See CZcams Video: "The Secret of Golf Balls Revealed: Dimple Dynamics "
it would not help. czcams.com/video/ZXpZy_A7mMk/video.html
How does the rider get fresh air to breathe?
Didnt you see the holes in the bottom where the tires were?
How do you turn?
How is steering done? Vie rear wheel? Transmission is on fron wheel i guess.
Transmission AND steering on front wheel. Cant steer the rear, becomes unstable.
Chain going from a middrive above the wheel down to the wheel doesnt affect steering too much, if power side of chain is aligned with the steering axis. Check out Raptorbike for a everyday example.
I imagine a vehicle like this with a 2 horsepower Bourke engine.
actually some of the best track cyclists can put out over 2hp, but obviously for a short period, so it doesn't beg to question why they don't use a professional.
if you need only 258 watts to maintain 100 kmh, why we can not see similar commercial velomobiles achieving at least 1/4 of this?
I see some recumbent bikes with 3000 watts motors and still they don't reach more than 80 kmh.
What is the power output from the trained cyclist when it reach 140 kmh?
How much time it can sustain that speed?
Now give us bike lanes who are worth the name and not just 50cm stripes from the road.
Then i get myself a Velobike, its fast (I can output 60-70km/h easily) and makes fun.
how to stop ?
Rorschach 0007 thanks
Bike crashes 2017 (ETA not available)
--12%
Bike crashes 2023 (ETA Available)
--67%
only 258 watts for 100 km/h?
+velo1337 That's what I was thinking too. Especially since I can sustain about 285 watts. But I am sure that I weight a good bit more that their rider.
this is a world record vehicle in a world record setting. battle mountain has the smoothest possible road with a descent close to the maximum allowed for that specific record (two thirds of a percent). that location took quite some finding. the racing is done in summertime when air resistance is lowest. also the bikes use special ultra-low-drag tyres.
Why don't you change the white cocoon shape like mythbusters did in "golf ball car" experiment? It will surely increase top speed and efficiency.
not practical off a track where you have a collision or have to stop fast
These types of bicycle are known as recumbent cycle.
They can go a record breaking 128km/h with human power only. No one has fixed a motor inside these stuff. We can make the person sit opposite to the recumbent position. As people sit in sports bike but, way inclined. We can also build side wheels which can deploy automatically.
WHY are they making such bike?
They expect a breakthrough. They expect to build a formula 1 cycle. And they also want people to consider these for their commutes under 60 miles eliminating the a biggest problem... I.e. slow speeds for cheap. And zero emmision. But this is a distant goal if they only rely on human power.
Why electrification of recumbent ?
An electric vehicles with recumbent design could be way faster than expected. We can tap into a new catagory of vehicles. The F1 electric bike. Someday you can expect these efficient bike on road people considering them for their efficiency and cool factor and price. Electric vehicles with such design can bring down price to performance ratio.
WHAT WE CAN DO?
There are some modifications could be done to recumbent such as position of the rider. Electrification of the cycle and automated side wheels making it and many more making it a choice for modern and cheap means of long distance transport. With only a 1000 watt Motor inside a recumbent can reach 300 + km/h of top speeds at highways. Considering real life factors such as the the weight of all components.
Ты лжец. О каких 300 кмч идет речь? 1000 ватт не способны разогнать и до 170 кмч
Had no idea eggs were so aerodynamic. Oh, and Heath Ledger lives @ 1:34
Don't text and ride...
If you made hand peddles you could go miles faster ... and put ovular gears on too as they have been proven to be much more efficient
I thought it was lady gaga's egg!! LOL jokes aside for real this is an amazing feat.
The main reason I like to ride a bike is to breathe fresh air and enjoy the view. How can I do that in this claustrophobic can? Also, rider cannot get in and enclose self alone? What happens if you get cramps? Sorry, nice goal to break speed limit and all, but you totally missed the point of bikes :)
lol, yea, we should try biking.
DarkoAqua I'm pretty sure the record is for being the fastest man powered vehicle not the fastest bike.
They weren't trying to make a comfortable bike for a leisurely ride. Comparing this bike to a beach cruiser is like comparing an 18 wheeler to an F1 car.... not a good idea ;)
And what happens when the video feed goes tits up? .... You career off the road at 86.65 mph!
You wouldn't get me riding in it. Too much like a high speed coffin!!!
Dont worry, you dont have to.
Wait until the advent of AI ,when we can tell the computer,we want a light weight frame and a low drag aerodynamic body
The problem isn't in the engineering, it is in the material. But it doesn't get much lighter than carbon fiber.
They actually did computer optimize the fairing shape.
What is this all about. You made best possible bicycle and put some crapy niemand rider in it .You should engaged Peter Sagan for this job.
Yeah cool idea mate. I’m sure they’ve got a few hundred thousand dollars lying around to pay Sagan for a week to drive this thing. Twat.
Even if Sagan would go for it, he wouldn't be an ideal rider. You need a sprinter, not an endurance cyclist.
Also, Sagan would need months to redevelop his muscles to perform in this position. Not good for his career, and probably an experienced and strong recumbent rider/velonaut is a better choice.
You are wasting energy pushing two wheels. Vehicle should only have one wheel with a balancing tail.
why make it so fuckin uncomfortable
this is one of these kids ideas that only works in their mind. man needs more space to move his legs about. or he will scrape and scuff his legs all over. how does that enable him to go faster? kids can not seem to see difference between imagination and real working world, do they? not fitting for college students, i mean, not seeing this obvious point here.
Its a concept vehicle, not a final product. The main purpose for NOW is to go as fast as possible with the minimum energy possible.
Yeah, and why don't Formula 1 cars have CD players and heated seats?
Yeah, and why don’t racing powerboats have pool decks and mini bars?