Who's going to be able to afford the commute?
Who precisely will be able to afford the cost of an Uber self driving commute?
With self driving cars uber will have to raise their prices because they will have to pay insurance, roadtax, maintain the cars (including washing them) and fund them in the first place to buy them new. They'll have to put their prices UP!
There won't be amortisation of costs from the driver who goes to work and adds a bit of cash to his income, whilst faster depreciating his car, so uber will have to get that all back.
Uber exploits the drivers. You get cheap journeying on the backs of both their labour and their equipment. Without that prices will rise.
Also, all these out of work people won't be buying cars or hiring them, what shall they do for money?