Am I the only one that thinks this is a bad idea? I think bad things will happen with casual carsharing of Model S. Drivers not familiar with the car or how to use it properly will run out of power, race the cars, and be distracted with the technology.
The Model S requires adjustment on the part of the driver... it's just not immediately intuitive to drive safely. It's expensive, powerful, and very fast - things you don't usually associate with casual "just jump in and drive" car sharing services. There's a reason Zipcar chooses inexpensive, simple, intuitive vehicles.