[dragonwriter]

> There are university Facebook rideshare groups in California that offer that trip for $15.

That's because those are real rideshare groups, not Uber-style quasi-taxis; the additional cost of an extra passenger when you are already planning on taking such a trip is small (at $15, you are well above it, and recovering costs you would have born without the extra passenger.)

That really tells you nothing about the costs when you aren't piggybacking on someone already planning on making the trip.

[pikachu_is_cool]

That doesn't matter. What matters is these automated fleets will have to compete with that en masse, as I'm sure the killer app for ridesharing will come out within the next 10 years.