Uber's CEO became an undercover boss in a used Tesla and was surprised by how rude some riders can be

• Uber's CEO moonlighted as a driver last September to better understand why recruitment was an issue.
• Dara Khosrowshahi told The Wall Street Journal he encountered problems that discouraged drivers.
• He also found that some passengers were rude and acted like they were alone in the car.

Uber's CEO moonlighted as a driver to try to find out why the company was having trouble signing up more drivers. He was surprised to find out just how many issues there were – and how unpleasant some riders could be.