[BinaryIdiot]

You're still ignoring the fact that Uber is the middleman here. Uber won't be manufacturing their own vehicles so when self driving takes off why wouldn't a car manufacturer directly offer the same service as Uber? They could undercut Uber and still make a profit because Uber will never be able to buy vehicles for as low as they can manufacture them.

Yes the driver is a big cost factor but so is the vehicle. If you can eliminate the driver and produce the vehicle and parts you will be able to produce and repair cars at rates lower than anyone without the same manufacturing capability.