Elon Musk and OpenAI boss Sam Altman faced off in a California federal court Tuesday in a blockbuster trial that could have far-reaching consequences for the AI industry and oblige the ChatGPT maker to profoundly revamp its business. - 'Scam Altman' - Moments ahead of the opening statements, Musk and Altman, who both sat with their lawyers at the federal court in Oakland, were asked by Judge Yvonne Gonzalez Rogers to keep social media posts to a minimum during the course of the trial.