Because if the answer is "nobody", they shouldn't be on the road
Do you understand how absurd this is? Let's say AI driving results in 50% less deaths. That's 20,000 people every year that isn't going to die.
And you reject that for what? Accountability? You said in another comment that you don't want "shit happens sometimes" on your headstone.
You do realize that's exactly what's going on the headstones of those 40,000 people that die annually right now? Car accidents happen. We all know they happen and we accept them as a necessary evil. "Shit happens"
By not changing it, ironically, you're advocating for exactly what you claim you're against.