As a vehicle user, and not a stock holder, there is only heuristic that will determine whether I get into either of their vehicles: Which one is more likely to kill me.

I'll take a ride in a self driving taxi through residential streets that might hit a dog.

I will not pay for a vehicle that will hard brake on a highway or drive under a tractor trailer.

Maybe after more deaths and data Tesla will pull ahead in that risk calculation but I will not pay to be part of that.