I would want better reliability than "it shouldn't be a problem...until it is." That's pretty much the same reason my 82yo mom used and let me be the first to say you don't want to be driving next to her car (she doesn't drive anymore).

As a preliminary step to any regulatory approval Tesla should release every byte of data from their tests so we can analyze the scenarios and events that the software has dealt with, so we can second-guess them. I seem to remember a common criticism of Tesla is that it's kinda shitty to work there and I don't think the best work comes out of an environment like that.

We should know for sure what they/you mean by "seem to" and "very low." Trade secret protection is insignificant when public safety is involved.

Along the same lines, if they can figure out how to drive a car, they can figure out how to give instructions to human drivers that are far, far better than the state of the art. So, when they release their revolutionary navigation system, I'll try it. Not buying a car from them though.