After a number of deaths in the US linked to Tesla owners placing too much faith in autonomous driving systems â and amid ongoing investigations by road safety regulators there â Elon Musk says mastering the tech is more difficult than he expected. - shares Tesla boss Elon Musk has finally admitted what many automotive industry experts have long realised: autonomous vehicle technology is a lot more difficult than it seems, due to the countless variables a car must learn, detect, and avoid while on the move. In addition to being able to detect lanes, other vehicles, traffic signals and pedestrian movement, fully autonomous cars must learn to