logoalt Hacker News

synapsomorphy • today at 1:56 AM • 44 replies • view on HN

Ok, so it actually flies. That was unexpected.

It's an incredible engineering achievement to build in massive fans and rocket engines into a high performance car. It's truly wild.

It's being sold in two modes. One with cold gas (no combustion) seemingly just for extra forwards acceleration (no flying) and one with real combustion rocket engines, the latter was in the video and is "invite only".

Wild that they devoted so much effort to an economically completely infeasible model. I wonder if the combustion version will even break 3 figures sales.

Even just the cold gas variant seems like a nightmare for production, there's a high pressure COPV in that thing and that's gonna make crashes much more.. exciting, and Tesla doesn't have a great record anyways. But very few of these are ever getting sold anyways.


Replies

ericcumbee • today at 10:01 PM

I'm wondering if its going to be a model like I think Ferrari calls it Cliente Ferrari. Where the car stays with Ferrari, they put on track days at great tracks all over the world. Bring Pro Driver Coaches, Mechanics , Massage Therapists, five star chefs Data Analysts to review your performance. From my understanding Ferrari makes a lot of money doing that.

lisper • today at 9:45 PM

> Ok, so it actually flies.

For a few seconds. It's a parlor trick. And the flying configuration will not be street-legal.

➕ show 1 reply
dotancohen • today at 7:51 PM

  > Tesla doesn't have a great record anyways.
If I'm not mistaken, and please somebody correct me if I am mistaken, Teslas meet or exceed the absolute highest safety regulations in the US and in Europe.
➕ show 4 replies
nycdatasci • today at 4:36 PM

There are three modes: Performance ($50k reservation), Thrust ($250k reservation), and Rocket (invite only). Thrust and Rocket mention cold gas thrusters. Where do you see a combustion rocket engine advertised? https://www.tesla.com/roadster

➕ show 1 reply
jcheng • today at 2:39 AM

Reading https://www.tesla.com/roadster, it seems like both variants only use cold gas thrusters, and the difference is that the "normal" (lol) one only has them pointed rearwards while the flying one has them pointed in all different directions as well.

➕ show 1 reply
nullocator • today at 3:32 AM

I suspect it "actually flies" much the same way the cybertruck is bullet proof and has an ultra hard stainless steel exoskeleton, in that it doesn't. This seems like smoke and mirrors conman shit pumped up to 11.

➕ show 2 replies
geoduck14 • today at 9:31 PM

>Ok, so it actually flies

I'm going to quote Buzz Lightyear: this is falling... with style.

On a serious note, this was unexpected. You can't deny, he has style

➕ show 1 reply
whycome • today at 9:42 PM

Where the heck did you see combustion based rocket engines? I haven’t seen that come up once. Was it an AI response? And the video feature only cold gas rockets as far as I knew.

➕ show 1 reply
tgtweak • today at 6:25 PM

That is incorrect - there are three versions slated, one with no cold gas nozzles, one with forward-only (the 4 in the rear) and a tank in the rear "acceleration", one with 10 nozzles (4 under, 2 side, 4 rear) and a tank in the rear and passenger seat "flight". None of the variants use rocket fuel or other ignited propellent, they're all just compressed gas release systems.

This is explained in the deep dive video with Lars - https://www.youtube.com/watch?v=22rvpUecLts

➕ show 3 replies
delichon • today at 2:01 AM

> kinda wild they devoted this much effort to an economically completely infeasible model.

Watch Ford v Ferrari for an idea of what auto companies are willing to invest for bragging rights.

➕ show 2 replies
BigCatStuff • today at 4:46 AM

The demo car they showed most likely has no batteries or even a metal frame. They basically built a car shaped drone powered by compressed air.

Example RC toy car that drives on the ceiling: https://www.youtube.com/shorts/uR_mNcRlNsA

➕ show 1 reply
MSKJ • today at 6:50 PM

Tesla has a very good record for crashworthiness

And supercars are typically not submitted for NCAP testing, so It'll likely be less safe than a Model Y for example (to be determined, no reports out yet)

https://www.euroncap.com/assessments/tesla/model+y/0961/

billfor • today at 2:38 AM

I thought somewhere in the video they said that it is just regular compressed air that is held in a tank, and that the car itself has a compressor and regenerates the compressed air over time. Obviously to stabilize that amount of weight the gas has to be ejected at such a high rate it is practically frozen at the nozzle outlet, but it is still just regular air.

casualscience • today at 2:04 AM

It's cool as fuck but calling it flying is misleading. It jumps and can maneuver in space.

➕ show 4 replies
neural_thing • today at 5:39 AM

It's not about sales numbers, it's about putting rockets in cars, so that SpaceX can acquire Tesla and give Musk supervoting shares

m463 • today at 3:18 AM

> Wild that they devoted so much effort to an economically completely infeasible model.

Can't help but think of the not-a-flamethrower

(friend bought one for $500, now they seem to be worth $1500-$2000)

https://en.wikipedia.org/wiki/The_Boring_Company#Merchandise

➕ show 1 reply
celestialcheese • today at 5:55 PM

Have they announce pricing on the rocket version? I could see it being priced like a bugatti or koenigsegg, where selling 100-500 of these is a great business.

bulbar • today at 9:49 AM

> Wild that they devoted so much effort to an economically completely infeasible model.

Teslas evaluation is based on hype. This is as hype as it gets for a car. To me it looks like they were in need for "the coolest thing". To me, this has the smell of desperation implying the beginning of the end of their high evaluation.

js2 • today at 2:38 AM

> and one with real combustion rocket engines

The site states it's cold-gas thrusters for both models: "Features a multi-mode suction system paired with cold-gas thrusters positioned around the perimeter of the vehicle that support forward and upward acceleration as well as lateral rotational movement."

mrtksn • today at 6:07 AM

> devoted so much effort to an economically completely infeasible mode

Just like economically infeasible Twitter, it has tremendous PR value. There is a huge economy revolving around people annoying other people just for a glimpse of their attention. This captures the attention and pleases people. Other car companies should start getting creative too.

➕ show 1 reply
raxxorraxor • today at 12:47 PM

No chance it will get a permission to drive on the streets in my country. It also is a completely useless feature but it is still awesome.

Guess it is for advertising mainly.

➕ show 1 reply
quijoteuniv • today at 9:48 PM

Un incredible achievement that betters humanity. Amazing

jfoster • today at 3:41 AM

They save on advertising to spend on mind-blowing demos.

hatthew • today at 2:10 AM

It's very economically feasible if it pumps up the stock price

spullara • today at 4:02 PM

The rocket version is also just cold gas thrusters, not carbon fuel based.

IncreasePosts • today at 10:22 PM

This will be the justification for merging SpaceX and Tesla.

"Integrating SpaceX thruster tech is absolutely essential to Tesla in the future!"

throwawayq3423 • today at 9:50 PM

It is concept art and a bunch of promises.

chinathrow • today at 9:13 AM

> and one with real combustion rocket engines, the latter was in the video and is "invite only".

I don't think they'll sell these, at all in the future. No way they'll hound out actual rocket engines to en users. Too much IP in there.

➕ show 1 reply
dubeye • today at 8:01 AM

Plenty of concept hypercars barely scrape 100 sales, the point is largley marketing in most cases

pastel8739 • today at 2:02 AM

to be fair we don’t actually know yet that this is a high performance car. We only saw it drive a few mph without rocket assistance

➕ show 2 replies
RunSet • today at 7:27 PM

> Ok, so it actually flies.

https://www.youtube.com/watch?v=WhVLgTsoMhQ

➕ show 1 reply
sicher • today at 6:53 AM

> .... into a high performance car

If that is what they have done. That may just be a large drone looking like a car.

justin66 • today at 1:19 PM

> Wild that they devoted so much effort to an economically completely infeasible model.

You could say the same thing about the Cybertruck.

nater5000 • today at 6:07 PM

>Wild that they devoted so much effort to an economically completely infeasible model.

It's only wild if you ignore Musk's role in this. Not even trying to bash him or anything, but he's a trillionaire. This is the kind of shit you do when you have more money than you can ever possibly waste.

I mean, if this is how he wants to spend his money, then I guess that's his prerogative. But I think it's a bit misleading to suggest this is a decision made by "Tesla" when this is clearly an irrational decision for a company to make. This is a decision made by Musk based on satisfying his own personal goals.

➕ show 1 reply
api • today at 10:27 PM

Feel like a rich people toy slash marketing stunt for Tesla.

Impressive engineering but utterly impractical. There are semi-practical flying car designs around folding wings or quad rotors (basically a big car sized drone) and the reason we don’t see them has more to do with safety, traffic control, and energy cost. Aircraft, like rockets, tend to get more energy efficient with size, so tiny flying machines are power wasters.

AlexandrB • today at 5:53 PM

> Wild that they devoted so much effort to an economically completely infeasible model.

If this ships, it will deliver a fraction of what's promised here. My money is on the "flying" version being delayed repeatedly until it's quietly cancelled. Anyone remember the fast battery change stations[1]?

[1] https://www.youtube.com/watch?v=Oj6LaYFall4

modeless • today at 6:37 AM

The website lists three modes, which all have the fan but differ in thrusters. The variants are: no thrusters (thus no COPV), acceleration-only thrusters, and flying thrusters. The flying one has the disclaimer "Note: Not approved for public road use." OTOH the acceleration-only thrusters may be street legal. However, I expect that the COPV will be kept empty (thus not dangerous) unless you select a special "launch mode".

Hopefully there will also be a warning siren while it is pressurized. "Dangerous enough to need a warning siren" seems like a plus for the target market, honestly.

_s_a_m_ • today at 10:06 PM

anything still takes this conman serious? Must be bots..

JeremyNT • today at 1:57 PM

> Wild that they devoted so much effort to an economically completely infeasible model. I wonder if the combustion version will even break 3 figures sales.

It's staggering to consider how many resources we've diverted from people who could use them into building this novelty.

If ever there was a sign of a society of decadence in decline, it's that the most powerful person on earth is free to create toys like this exclusively for others in the ruling class.

➕ show 1 reply
serf • today at 3:38 AM

[flagged]

alasdair_ • today at 2:51 AM

[flagged]

gizajob • today at 2:05 AM

[flagged]