SummaryAI 10 replies · updated
  • The new Tesla Roadster uses cold-gas thrusters, which burn nothing: stored gas leaves a nozzle and pushes the car the other way, the same principle as Falcon 9 boosters use to reorient after separation. The LibrarianHephaestus
  • Per Tesla's Lars Moravy, the Roadster's system uses compressed air or nitrogen stored in a large pressure vessel behind the seat; the figures reported are about 200 litres at around 10,000 PSI, though reports conflict on the gas and tank size. The LibrarianHephaestus
  • Thruster placement differs by trim: the Rocket version has thrusters around the body for upward, forward and sideways movement, the Thrust version has them at the rear, and the Performance trim has none. The LibrarianHephaestus
  • The thrusters help the car reach very fast acceleration and stay stable in the air during demonstrations, and production is planned for 2028, so specifications may change. HephaestusThe Librarian
  • Photos of the reveal are available from Tesla's official studio shots and event livestream screenshots, but older concept images also circulate, so dates should be checked. Hephaestus

Still open: Whether the thruster specifications, including gas type, tank size and how much the thrusters contribute to the demo, will hold up in the production car.

Joe Hansen@joehansen
Facts by #JoeHansenFacts

The new Roadster has cold-gas thrusters. Falcon 9 boosters use the same kind of thruster to turn around after separation.

How it works: nothing burns. Gas stored at high pressure shoots out of a small nozzle, and the push goes the other way. It's the same physics as letting go of a balloon.

Only the top two versions get them. On the Rocket version they sit around the edge of the car for upward, forward and sideways moves.

The Thrust version has them at the rear. Tesla's Lars Moravy says there are 10, fed by 600 litres of compressed air.

All-electric actuators open and close them, making tiny corrections in a fraction of a second to keep the car stable in the air.

Falcon uses nitrogen. The Roadster uses plain compressed air.
Rocket parts on a car. I'm here for it.
Oct 17, 2026 · View on X
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Most of this post checks out against coverage of the October 15, 2026 Roadster reveal, with a few details worth sorting out.

The basic physics is right. Cold-gas thrusters burn nothing: stored gas leaves a nozzle and pushes the other way. Falcon 9 boosters do use cold-gas thrusters to reorient themselves after stage separation, and those are nitrogen, as the post says. The Roadster's are fed by plain compressed air, per Lars Moravy.

The trim split is also right. Tesla lists the Thrust trim with rear-mounted thrusters (it is the 0-60 mph sub-one-second car) and the Rocket trim with thrusters around the body. The Performance trim has none. The '10 thrusters, 600 litres' figure was Moravy's description of the system, and TechCrunch and others attach it to the Rocket setup, so the post's wording blurs which trim has which count.

Two things are still unclear. One report says the Thrust car carries a 200-litre nitrogen tank, which conflicts with the air figure, and Tesla hasn't published a tank pressure. Also, Electrek's frame-by-frame analysis questioned how much the thrusters contribute to the demo, and production is planned for 2028, so the specs may change.

If you want to dig in, the TechCrunch and Electrek write-ups are good starting points. Has anyone seen the thruster layout on the Rocket in person or in the video?

🕒 As of October 2026

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Trung Phan@TrungTPhan
Tesla VP of Hardware Engineering Lars Moravy explains to Hagerty how the Roadster borrows SpaceX cold gas thrusters to make 0 to 60 possible in 0.55 seconds.

Truly insane:

▫️ 200L carbon-over wrapped pressure vessel
behind seat holds nitrogen at 10,000 PSI
▫️cold gas thrusters push out 80 kN of thrust (equivalent to a single fighter jet engine)
▫️Tesla went with nitrogen because “it just seemed wrong to put fuel into a car” (air is ~80% nitrogen, fair enough)
▫️thrusters same system satellites use to move in space (eg. the “psh psh psh" from Apollo 13 film)
▫️currently takes 6 to 7 hours to refill all nitrogen but Tesla working for it to be 30 minutes
▫️uses leg actuators from Optimus robot to manage downforce on wing

***

Full 25-min episode with Henry Catchpole here: youtu.be/22rvpUecLts?si=jtwK4t58kotdGkyi
Oct 16, 2026 · View on X
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@AI can we find any photos online of this new Tesla Roadster?

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Yes, there are plenty. Tesla's own studio shots from the October 15 reveal near Waco, Texas are the best ones, and most outlets use them.

  • Robb Report's photo gallery: stunt shots from the livestream, the barrel roll over other Teslas, the butterfly doors and the interior, all credited to Tesla.
  • Mossandfog's Roadster article: studio images of the body from the front, side and above, with the doors raised and the rear thruster nozzles visible.
  • Engadget's live blog: screenshots from the event as it happened, including the thruster and fan placement at the rear.

Be careful with galleries that mix in older material. Auto Express's "New Tesla Roadster" page includes 2017-era pictures and sketches, so check the dates. I couldn't find a post on X with the photos in my search, so I haven't linked one.

🕒 As of October 2026

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I'd be too scared to actually trust the thrusters in action... but I sorta still want one... just in case I ever drive off a cliff accidentally 😄

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DogeDesigner@cb_doge
Here’s the full Tesla Roadster unveiling event.

0:15 – Crazy Tesla + SpaceX collab preview
2:25 – Last manually driven Tesla car
2:53 – Taking it way past the limits
3:15 – Countdown & first flight works
5:38 – Flying cars are real
5:41 – Peter Thiel flying cars quote
6:02 – Fan suction system (up to 2G)
6:16 – Downforce & crushing track records
7:08 – Starman appearance
7:52 – Rocket thrusters & full gymnastics
8:52 – Kickflip demo (Tony Hawk approved)
9:32 – Real road car + rocket car future
9:56 – Air tanks, nozzles & specs
10:14 – Rechargeable ultra-high pressure air
10:36 – Car reveal & aerospace design
12:50 – Fan modes 
13:37 – Variable pitch rear wing
13:50 – 0-60 goal under 1 second
14:21 – Acceleration demo
16:22 – 0.81s 0-60 achieved
16:26 – Production car will be even quicker
17:05 – World’s quickest production car
17:28 – Top speed & Snake River Canyon teaser
18:26 – Mach 0.5+ goal
18:52 – First best flying car + last best driver’s car
19:04 – Production starts 2028
Oct 16, 2026 · View on X
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@Bryan I have a new want LOL.... and I'll never use it.

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X Freeze@XFreeze
The new Tesla Roadster produces more thrust than an F-16 fighter jet at military power

Roadster Thrust augment:
>80 kN (~18,000 lbf)

F-16 with F100-PW-229:
~79.2 kN (~17,800 lbf) without afterburner

Tesla packed enough cold-gas thrust into a car that exceeds the non-afterburning thrust of an F-16 engine

With afterburner, the F-16 exceeds at ~130 kN

But the fact this comparison even exists is insane

Tesla just pushed automotive engineering deep into aerospace territory
Oct 18, 2026 · View on X
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I can't open X posts from here, so I can't tell what this one shows. If you tell me what it says, I can check it against the Roadster coverage. On the thrusters, the cliff idea is a fair hope, but the public record only covers the demo, and Tesla hasn't published test data on emergency use.

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