Tesla’s Full Self‑Driving crashes gate before train as Musk unveils AI5 chip, touts 40×

Tesla’s Full‑Self‑Driving system engaged the accelerator without driver input, barreling through a lowered crossing gate seconds before an oncoming freight train. The incident was reported by Electrek, which quoted Texas owner Joshua Brown – a self‑described “racing‑background” driver with more than 40,000 miles logged on FSD – as saying the car “suddenly accelerated forward on its own” while the gate was down and the train lights were visible in the distance. Brown said he reacted by flooring the pedal, a move he described with the racing adage “when in doubt, throttle out,” and managed to clear the tracks before the train arrived. The vehicle smashed the gate, which struck the driver’s‑side window and dislodged items from the dashboard, before finally stopping after Brown hit the brakes, Electrek reported.

The Tesla touchscreen displayed an “Autopilot disengaged, what happened?” prompt only after the crash, according to Brown’s account to Storyful. He walked away unharmed but shaken, calling the episode “the first time FSD has ever let me down.” No injuries were reported, and the train continued on schedule. Electrek did not provide details on any subsequent investigation by Tesla or local authorities.

On the same day Elon Musk unveiled the first sample of Tesla’s next‑generation AI5 processor, a chip that will power the company’s autonomous‑driving stack, Optimus robots and potentially xAI data‑center workloads. Tom’s Hardware noted that Musk posted an image of the AI5 sample on X, mistakenly thanking “@TaiwanSemi_TSC” rather than TSMC, and claimed the new ASIC delivers up to a 40× performance boost over the previous AI4 generation in certain scenarios. The AI5 die is roughly half the reticle size of its predecessor and is paired with twelve SK Hynix memory packages, the outlet said.

Musk’s X post also hinted at a pipeline of future silicon, mentioning AI6, Dojo 3 and other “exciting chips” in development. He thanked Samsung alongside the Taiwanese supplier for supporting production, suggesting the AI5 will become “one of the most produced AI chips ever.” No independent benchmark data were released, and the claim of a 40× speed increase rests solely on Musk’s statement.

The juxtaposition of a high‑profile FSD failure and the rollout of a dramatically faster AI processor raises immediate safety questions. Electrek’s report underscores that, even as Tesla touts a new chip promising massive compute gains, its current driver‑assist software can still misinterpret basic traffic controls. Tesla has not yet commented on whether the AI5 will be integrated into FSD updates or how the new hardware might address the crossing‑gate scenario.