They're a blast to drive!
Here in Seattle (and also Portland) we have BMW's ReachNow drive sharing network, so are able to drive the i3 for about 40 cents per minute point-to-point.
It's great since BMW handles the fleet management and electric charging, we just open up the iPhone, find the closest one and jump in, driving off. The future!
I have to wonder: how many people have gone out and bought or leased an i3 after experiencing the thrill through ReachNow?