In 2018, Key was driving home from the dentist when his 2015 Tesla Model S crashed into the back of a parked police car while using Tesla's Autopilot driver-assist feature, The Times reported.Tesla's Autopilot feature is marketed as a helpful feature for driving on highways that can steer, accelerate and brake the car automatically within its lane.The beta feature enables the vehicle to automatically change lanes, enter and exit highways, recognize stop signs and traffic lights, and park.But since the accident, Key has bought three more Teslas and continues to use both Autopilot and FSD, adding the software has gotten better about monitoring driver's attention on the road through a nag feature that tracks the pressure on the steering wheel and the driver's eye movement.Insider previously reported that a Tesla driver took a 6,392 mile road trip primarily using Autopilot and FSD and continues to view the program as a "lifesaver" despite encountering bugs in the software."