https://www.theregister.co.uk/2019/04/02/tencent_tesla_hacking/

Video The Autopilot feature in Tesla Model S vehicles could be fooled into swerving across lanes into oncoming traffic by mere stickers on road, researchers discovered. The eggheads also found a way to take control of the flash motor's steering with a wireless gamepad.

Tencent Keen Security Lab documented this week how it successfully infiltrated the autopilot’s system engine control unit (ECU) to take remote control of the car. The Chinese boffins also described how they fed on-board cameras with dodgy inputs, using stickers on the road surface, to force the vehicle to swerve across lanes, or turn on its windscreen wipers.