Elon MuskTesla Optimus robot prototypes walk onto a stage.
Screengrab from We, Robot livestreamElon Musk has been working on the Optimus humanoid robot for years.
At Tesla's Robotaxi event last month, the robots poured drinks and played rock-paper-scissors with guests (though they were remotely controlled by humans).
Outside Tesla, Musk personally invested in Vicarious when it was an AI startup working on general intelligence for robots.
Vicarious has since been acquired by Intrinsic, an AI robotics company at Google's parent company, Alphabet.
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Elon, Robot livestream Elon Musk, Musk, Tesla