] Tesla workers kept track of Elon Musk’s personal life and relationships to anticipate his mood, according to a new book ]

USA TODAY

USA TODAY ] This content is only available to USA TODAY subscribers. Subscribe for as low as $4.99 per month. Original reporting that provides diverse perspectives on news and issues of today.

Are you a robot?

Are you a robot? ] Why did this happen? Please make sure your browser supports JavaScript and cookies and that you are not blocking them from loading. For more information you can review our Terms of Service and Cookie Policy.