Elon Musk's Temper

According to The Wall Street Journal, Tesla CEO Elon Musk started head-butting a car at Tesla's Fremont, California, factory this spring after he learned the assembly line would stop when people came too close to it. Musk is reported saying, "I don't see how this could hurt me. I want the cars to just keep moving." A Tesla spokesperson tells Business Insider that Musk tapped the car with his head while wearing a safety hat to demonstrate that it didn't pose a safety risk.