There is no possibly way you can account for all of the conditions experienced in the real world on a closed course. Tesla needs to gather real world data at this stage of development. Keep in mind all of your rediculous objections are the same that people voiced when regular old cruise control came out. Fear…

The reason the crash happened was because the sensors field of view passed under the trailer. Have you seen many busses that would allow most of a car to pass underthem? No, a freak accident that I imagine will be corrected by adding a sensor array above the rear view mirror. Oh the humanity one man dies in a traffic…