A future where AVs exist that can replace human drivers is a future where so many requirements and drivers for personal mobility have changed as well: due to the possibility of replacing a human performing a highly complex task in situ.

That future may not even want or need cars.

The other, more realistic future is one where human-level AVs are always just out of reach. Where causes of accidents are just as intransparent as with human drivers, we're all a little bit safer but a patch can cause catastrophic divergent behavior due to the innate non-linearity of the problem.

That future may not want or need cars either but it may not even be considered.