content: Yep. Seems awesome.  And the ability to summon different types of vehicles.  One day, you might flag down a bus.  The next, a car.  On the weekend, take a car to the hardware store and return in a truck full of lumber.  Late for work? Summon a helicopter... or splurge on a fancy supercar for your next hot date. A recent study found that we'd need a fleet of cars only 15% the size of the current fleet to meet everyone's needs. In my own case, I value my car based on total cost inputs divided by the amount of time/miles I drive it each day.  If Uber or something becomes the more efficient choice, I'll switch.