https://boingboing.net/2019/03/31/mote-in-cars-eye.html
Researchers from Tencent Keen Security Lab have published a report detailing their successful attacks on Tesla firmware, including remote control over the steering, and an adversarial example attack on the autopilot that confuses the car into driving into the oncoming traffic lane.
The researchers used an attack chain that they disclosed to Tesla, and which Tesla now claims has been eliminated with recent patches.