Well it's a reality! At least in Israel and soon in Holland...
BBC News - Has Israeli firm cracked electric car angst?
"There is a network of dozens of "switch stations" around Israel - they look like a car wash but without nozzles or brushes.
You drive in, and robotics take over - removing the battery from under the car and replacing it with one that has been charged. The switch lasts about five minutes.
The battery weighs 250kg (equivalent to the weight of about three adult men) and it takes up a large space behind the back seat, but there is still plenty of room for luggage as there is no petrol tank."
Sounds like a superb idea, if money can be found for the infrastructure. Wouldn't surprise me to see Google battery stations soon
