i recently read in our local newspaper that an independent service station owner is thinking about adding a fast charging outlets to his stations here in N.S. that allows electric cars to pull in and for a small charge$ gets charged up electrically in about a half an hour (hes thinking of adding coffee shops or such to kill the time)
this in my opinion is the direction this technology is headed and is what I mean by infrastructure. It would either be charging or pulling in for a battery exchange.