from another post above a trip from SF to Vegas is 569 miles and 8 hours. The standard reimbursement (gas + wear and tear) is $0.50/mile. So that is $260 in gas + wear and tear. a quick search finds taxi drivers are $13/hr - $20/hr. that is an additional $104 - $160.
The slower your drive, the higher a percentage the taxi driver will account for.
>self-driving cars could lower costs by 30% - 60% just from labor savings.
Which is almost certainly not enough to drive the radical changes in car ownership behavior that many people seem to assume will happen. To be sure with a human driver you probably need to also account for utilization rates and returning to their starting point.
I've never been quite able to square the rates of things like Zipcar with taxi/Uber. Given cabbie salaries, it seems they should be closer--at least in places that don't have medallion systems that really skew things.
The slower your drive, the higher a percentage the taxi driver will account for.
Another site mentions that 2/3 of the taxi fare is going towards gas + driver pay: http://work.chron.com/much-fare-taxi-drivers-keep-22871.html
It sounds like self-driving cars could lower costs by 30% - 60% just from labor savings.