I believe for cities and dense populated area's were charge points easily viable that electric cars have there real niche if the price and incentives to migrate are there. Offset against cleaner air in dense populated area's/cities and its a win win. But until some extra leaps in power storage are made then we still have a little way to go until things truely pick up.

Though a car that could act as a pod that could attach onto a transport train line would truely open up interesting options in personal transport and charging alternatives.