didn't one of them actually kill someone with his girlfriend? I recall he met up with them to 'buy a boat' and threw the couple that owned it overboard in the middle of the ocean.

Other people are touching on the obvious, the endurance and hand eye coordination, etc but not touching on the needed communication skills to work with engineers describing that the car is doing and collaborating with them to ensure the adjustments made improve the handling of the car and the mental capability to make the correct adjustments to the car on a steering wheel layout that is like the dash of a fighter jet all while maintaining car control on the ragged edge.