I already commute an hour each way by public transportation. The only benefit a self-driving car could theoretically offer me is that I don't have to deal with other passengers.
This is all things equal, and assuming that the advent of self-driving cars doesn't also bring a whole new economy/job market.
I think this is fairly unlikely to stay a permanent source of inequality between classes of people. I also think it is very likely that people who don't notice the wage reactions will continue to complain about it indefinitely, though.
I'd be happy to pay triple my current commute expense in return for two things:
1) A vehicle that picks me up on-demand from my home and which goes exactly where I'm headed, so I don't have to commute to and from BART.
2) A vehicle populated only by other paying customers, with a mechanism to eject bad actors from the system.