Trial continues after heated back and forth during OpenAI’s cross-examination of the Tesla CEO on Wednesday Trial continues after heated back and forth during OpenAI’s cross-examination of the Tesla CEO on Wednesday Elon Musk’s court case against Sam Altman continues on Thursday, after a day of contentious exchanges during OpenAI’s cross-examination of the Tesla CEO. Musk will face another round of questioning before his lawyer calls more witnesses, including OpenAI’s president, Greg Brockman.