Do Some Tesla Operators Sleep at the Wheel in Self-Drive Cars?

Videos online show Tesla drivers seemingly sleeping behind the wheel as the car drives itself. Tesla describes the videos as hoaxes deliberately made to go viral. But one woman says what she caught on her cell phone was very real. Autopilot is one of Tesla's most popular features. Tesla says autopilot is designed in a way that requires drivers to keep their hands on the wheel at all times and will sound an annoying alert if they drive hands-free.   However, videos online show Tesla owners trying to disable that safety feature.