Austin has a service called car2go where there are cars parked all over the city, and you can pick one up and drive it anywhere in the city. They have you indic

Austin has a service called car2go where there are cars parked all over the city, and you can pick one up and drive it anywhere in the city. They have you indicate whether or not the car is clean when you get in. Self driving cars would be even better at this - if the car is dirty, you could press a button, which would send it back to the repair place, and send you a new car.