Why self-driving Uber cars look so geeky

Qawiyah Muhammad can see her own future. An Uber driver in Pittsburgh, she knows that one day her job will be replaced by a robot car. She knows the robot cars are coming because she sometimes spots experimental models driving themselves around town. "You can tell them apart," she said, "because they have a thing on the top of the car, like'Back to the Future.'" There's a reason they stand out so much, and it's not because Uber or anybody else thinks they look cool.