Jury selection begins in Musk v. Altman trial at a federal courthouse in California, with Sam Altman and Greg Brockman in attendance (Ashley Capoot/CNBC)

Ashley Capoot / CNBC: Jury selection begins in Musk v. Altman trial at a federal courthouse in California, with Sam Altman and Greg Brockman in attendance — Jury selection is beginning in the high-stakes legal battle between longtime friends turned rivals Elon Musk and Sam Altman at a federal courthouse in Oakland, California.