Drivers are already using battery swap stations in Israel and a few other test areas. Swap for a full battery takes less than 5 minutes. The cars built to work with this system are Renault and Nissan I believe. Check out the standardized batteries (drivers subscribe to a 'battery plan' so any full battery is works the same).

video: Drive Switch Go - Better Place

short video http://youtu.be/VR3oLV4fdcE longer video http://youtu.be/S3Os25gP4yA

//edited to add video links