Like from that point alone your asking a large portion of people to trust something less capable than them-selves. We should be aiming for the higher/upper percentiles not the average. Especially, considering how fast a digital control system can operate, average is a horribly low bar.

-Edit- If throw in the effect that a lot people over estimate their abilities your going to get even fewer people who trust a self driving car that is only as good as average.