Tech Elon Musk ‘really angry’ employees weren’t still working at 9 p.m. at startup: report By Ariel Zilber Published Oct. 13, 2022 Updated Oct. 13, 2022, 2:12 p.m. ET Elon Musk would roam the halls of his company, Zip2, and get "really angry" when he saw people away from their cubicles at 9 p.m., according to a software engineer who worked for him. BELGA MAG/AFP via Getty Images