Yann LeCun, Meta’s chief AI scientist and a Turing Award winner, publicly criticized Tesla’s Roadster cold-gas propulsion concept on X, arguing that the system is essentially driven by compressed air. He said the design may be simpler than a rocket engine, but its specific impulse is still below 50 seconds. Elon Musk later appeared in the comment section and responded with a blunt insult, writing that he was "farting in your general direction." The exchange centered on Tesla’s proposed flying-car-related concept and quickly drew attention because it involved two high-profile figures from the tech world. The remarks cited in the post were limited to LeCun’s technical criticism of the propulsion approach and Musk’s direct reply.
Odaily reported that Yann LeCun, Meta’s chief AI scientist and a Turing Award winner, recently criticized Tesla’s flying-car proposal on X, taking aim at the Roadster’s cold-gas propulsion system.
LeCun said the setup is essentially powered by compressed air. While the structure is simpler than a rocket engine, he said its specific impulse is still below 50 seconds.
Elon Musk later showed up in the comment section and fired back directly, writing, "I fart in your general direction."
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