I'm a periodic Uber user and tend to use it later when public transit isn't running. This would be interesting, and if cheap enough, could be more convenient than waiting for a bus if you're in an area where they don't run frequently and it's storming, extremely hot, you don't want to wait around.<p>I also just tried out Car2Go which costed me ~$15. The same trip from Uber, albiet at a different time of day, costs $9-12, and I get a driver. If Uber's pricing is even lower due to car sharing, then services like ZipCar and Car2Go may be in a little trouble.<p><i>Of course, I realize if you're going to pick something up from a hardware store or whatever you may not want to use Uber, but for many types of trips using a service like Uber or Lyft is better and more convenient than driving yourself</i>