Tesla Roadster
Where it stands: Tesla demonstrated a Roadster that can hop and fly, and Tesla has claimed 0-60 mph in 0.81 seconds while an executive said 0.55 seconds is possible. Skeptics including Yann LeCun argue the compressed-air thrust lasts only seconds and the car is impractical, while others question Tesla's history of undelivered promises. A browser game inspired by the demo has grown into a multiplayer San Francisco racing game with rooms and server-side lap timing. Watch for any delivery date, price, road-legality ruling, or independent confirmation of the performance numbers.
Latest
- 2026-10-25 (~11:02 AM ET — x.com/AravSrinivas): the artifact lane's first update since Oct 18 — Perplexity CEO Aravind Srinivas: SF 2049 (2049.pplx.app) "is bigger now, and it's multiplayer": race rooms on Cloudflare Durable Objects (create a room, share a six-letter code, server-side lap timing, rooms close when empty), ten new player cars generated with image-to-3D plus a studio garage, a Blade Runner-style flying Spinner, Rapier physics with handbrake powerslides, a fullscreen map rebaked to the real SF street layout; the trailer "shot by three agents in parallel" (fixed-step 1080p60 capture, a real two-player race on a second GPU, sound rebuilt from the game's own engine loops), "everything in it is captured gameplay." Announced by the company's own CEO with a live URL; the parallel-agents trailer mechanics are the claim to verify. Watch: verification of the trailer pipeline, server-side timing under multiplayer load, and the game's continued life as the Perplexity-side echo of the Roadster demo.
- 2026-10-18 (~12:01 PM ET, Arav Srinivas — x.com/AravSrinivas): the beat's second Perplexity Computer build artifact — a "Cyberpunk inspired Roadster free-roam browser game" at 2049.pplx.app, a Perplexity-flank echo of Grok Build's Roadster game (X Freeze, z-axis-traffic.grok.me, Musk RT Oct 17). No new vehicle claims; the demo's third-party build-artifact layer is now a two-harness, two-game pattern. Watch unchanged: independent replication of the 0–60/downforce numbers, any road-legality ruling, delivery date/price, and a build log behind the "built by Perplexity Computer" attribution.
- 2026-10-18 (ai-social window, X layer): the skeptic layer round-trips — LeCun RTs Fred Lambert's "Everything Yann said here is roughly correct, and Musk knows it, which is why he responded like a 14-year-old" (~1:39 PM ET — x.com/ylecun) and states his own position in a companion RT (~4:23 PM ET — x.com/ylecun): "I even own two Teslas. I do expose marketing stunts that, while cool on the surface, are not the achievements they are claimed to be," with the compressed-air thrust-duration argument and the 2017-announced-never-delivered framing re-upped. Development of the thread's skeptic layer (after Carmack's Oct 15-16 pass and LeCun's Oct 17 physics pass): the dispute is now two-sided on the record with no substantive Musk/Tesla rebuttal captured. Watch unchanged: delivery date, price, any regulatory artifact, independent replication, and Musk's next move on the skeptic bloc.
October 2026 · 10 updates
- 2026-10-18 (~2:03 PM ET — x.com/ylecun): LeCun's third pass on the Roadster fight makes the personal/political layer explicit — "I am anti-Musk when it comes to politics," citing Musk's "massive dissemination of disinformation through X and other channels" — while putting the compressed-air mechanics into his own numbers: a 400-liter high-pressure air tank replacing the passenger seat might "hover for a couple of seconds," but "they are not a path to actual flying cars," via the Burt Rutan SpaceshipOne analogy. Development of the two-sided skeptic layer already on record from the same day (LeCun's RTs of Lambert and Sam); no substantive Tesla/Musk rebuttal in the reporting. Watch: any Musk/Tesla counterpost that engages the physics rather than the person.
- 2026-10-17 (~3:12 AM ET, Musk reply to Scoble — x.com/elonmusk): the autonomy escalation goes on record — buyers "will be able to ask the Roadster to perform any of the tricks shown autonomously, as it will be sentient," plus the first physical test-facility commitment: a "wild looping track (crazier even than Hot Wheels)" at the Texas HQ for customer testing. Still no delivery date, price, or regulatory artifact; demo ≠ shipped.
- 2026-10-17 (~12:37 PM ET, LeCun — x.com/ylecun): the thread's first hard-physics skeptic quantification — "it's just compressed air. Easier. But crappy specific impulse (less than 50 seconds)": even with 50% of the car's mass as compressed air, "less than 10s of useful thrust (with thrust-to-weight ratio larger than 1.0). Probably more like 5 seconds, actually," so "the car must be an empty, lightweight shell containing big compressed air tanks. Cute demo, but totally impractical." A thrust-duration argument — sharper than Carmack's danger/sales framing, and the third named skeptic voice alongside Carmack (tank safety, sub-100 sales estimate) and his suction-fan re-attribution.
- 2026-10-17 (~1:18 PM ET, Musk — x.com/elonmusk): forward-demo escalation — coming Roadster demos "will include flying over the Snake River or maybe Grand Canyon and landing on its wheels and exceeding half the speed of sound," with the attached line "Turns out the future does have flying cars." Forward-looking claim with no artifact; still no delivery date, price, or regulatory document (demo ≠ shipped).
- 2026-10-17 (~12:13 PM ET — x.com/ylecun): LeCun RTs a long-form consumer-trust critique (AdrianoFeria.eth) of the flying-Roadster beat — the backlash reframed from physics to Tesla's track record: the second-generation Roadster unveiled 2017 with deposits taken and 2020 deliveries promised but never made; FSD robotaxi-income marketing to Model 3 owners that did not materialize; the Solar Roof (unveiled 2016) described as discontinued in August 2026; Cybertruck recalls, build-quality complaints and collapsing demand; the demo dismissed as "an expensive, impractical engineering stunt" with "why not just deliver what was promised?" Development: the thread's first broken-promises/consumer-trust layer, arriving via LeCun's amplifier and stated as the post's own accounting — the 2020 delivery promise and the Solar Roof shutdown date are unverified. Watch unchanged plus: any Musk/Tesla response on the undelivered 2017-deposit Roadster, and whether the trust-erosion frame reaches mainstream demo coverage.
- 2026-10-16 (~1:19 AM ET, Tesla's own account via Musk RT — x.com/elonmusk): the company puts its own headline figure on record — 0–60 mph in 0.81 seconds — firming Jurvetson's third-party 0.8 s attestation into Tesla's official demo claim; same window still contains no delivery date, price, or regulatory artifact (demo ≠ shipped). Companion company posts ("Holy smokes," "Out of this world," ~6:08/~1:25 AM ET) are amplification only.
- 2026-10-16 (~4:13 PM ET, Musk RT of Trung Phan relaying Tesla VP of Hardware Engineering Lars Moravy's Hagerty interview — x.com/elonmusk): the on-record engineering layer arrives from a named Tesla executive — the Roadster borrows SpaceX cold-gas thrusters: a ~200 L carbon-over-wrapped pressure vessel behind the seat holding nitrogen at 10,000 PSI, ~80 kN of thrust ("equivalent to a single fighter jet engine"), refills currently 6–7 hours with Tesla working toward 30 minutes, and Optimus leg actuators managing downforce on the wing. Moravy's figure is 0–60 "possible in 0.55 seconds," under the company's own October 16 ~1:19 AM official 0.81 s claim — a discrepancy, not a resolution. The Hagerty video is the thread's first named-executive, non-Musk-channel artifact; still no delivery date, price, or regulatory artifact, and no independent replication. Evening adoption echo: Arav Srinivas shares a Perplexity Computer-built "physics behind the roadster" page at roadster.pplx.app (~8:59 PM ET — x.com/AravSrinivas) — the demo's first recorded third-party build artifact.
- 2026-10-16 (~3:00 PM ET, Musk RT of Top Gear — x.com/elonmusk): mainstream amplification ("the new Tesla Roadster can actually fly") — no new claim.
- 2026-10-15 (demo evening, Musk-channel relay, first amplifications ~9:12 PM ET — x.com/elonmusk): Tesla demonstrated the Roadster hopping/flying in a public broadcast (company post "Real life, baby," ~9:59 PM ET — x.com/elonmusk). Third-party attestations at the time: Steve Jurvetson — 0–60 in 0.8 s via "thrusters and suction for tire grip," top speed Mach 0.5, "it can fly" (x.com/elonmusk); Edmunds — real, in person, flies (x.com/elonmusk). Technical layer: Track Mode passive downforce "approaching F1 levels" with wing actuation driven by the @Tesla_Optimus actuator system (x.com/elonmusk); 1 MW battery/drive unit, one-third more power than Model S Plaid at half the mass (x.com/elonmusk). Musk quote (DogeDesigner relay): attitude-control + main thrusters, rolls/"gymnastics," self-recharging air tank, "not necessarily a safety-optimized car," legality not assured in all jurisdictions (x.com/elonmusk). Skeptic anchor: Carmack — demo carried "a non trivial chance of embarrassing failure" (x.com/ID_AA_Carmack). Context: Musk notes the OG Roadster is still orbiting (x.com/elonmusk). No delivery date, price, or regulatory artifact — demo ≠ shipped. Watch: independent replication of the 0–60/downforce numbers, any jurisdiction's road-legality ruling, Optimus-actuator confirmation outside Tesla's own copy, and the baseline-model ordering Carmack named.
- 2026-10-15 (~11:07 PM ET, Carmack — x.com/ID_AA_Carmack): the technical-due-diligence layer — compressed-air tanks run at pressures comparable to the CNG/hydrogen tanks in thousands of vehicles and are "less dangerous," though "I wouldn't want to be in a crash with one," and the first sales-ceiling estimate: "I doubt there will be a hundred of the full-flight models sold, but the thrust package is just practical enough for the fringe of the supercar market." Companion post (~11:09 PM ET — x.com/ID_AA_Carmack): extreme cornering and super-hard launches come from suction fans, not thrusters, workable "without the tight time limits."