There is so much R&D going on in the car industry that the concept of batteries being big heavy boxes that have to be constantly lugged about to be recharged will be overturned. For example Toshiba have developed a new titanium niobium oxide battery that gives cars a 200 mile range and can be recharged in 6 minutes.
This will give rise to much more innovative installations such as batteries with unusual shapes to fit in dead spaces and the use of distributed battery installations (lots of smaller batteries spread about).
When the current push to electric cars was first mooted, my immediate thought was that "refuelling stops" would consist of pulling up and swapping battery packs (bit like the old coaching inns swapping horses!) ..........how wrong I was?