I think the real future of electrics as commuter and shopping cars will be the "parking meter" that charges your car as long as you feed it money. These days that may actually be paid for on your phone. (dial the number of the parking meter and it shows up on your phone bill)
I have to admit, this is really a pretty cheap way to get around once you buy the car and pay for the maintenance but the battery is really the biggest maintenance cost, ending up costing more than the electricity from my calculations when I was trying to get the numbers to come out.
The other side of that is the tax, which would end up being more than what the power costs if we want to replace the gasoline taxes we would be losing.
