In most cities that do not have the infrastructure of public transport like a Chicago or New York I could see electric cars actually working for people who just want to drive to and from work everyday. If the cost of the cars were reasonable it could work. As far as replacing what we have now with any alternative fuel i don't see it happening. It will take a loooong time to replace what we have. Kinda like that big ship in the sea....gotta turn it slow and be patient and it will eventually turn.

If you think back when V8 muscle cars were the only thing around and then Japan pops up with these little no frills 4 cylinder donut tire having mini cars that were taboo to drive. Eventually people realized hey could work and sales took off. 6 cyclinders and more options on them also improved sales. The american 4 and 6 cylinder cars were around but the dependability at that point was suspect so again the Japanese car sales soared. Now look at us as a nation. Most families don't have an 8 cyclinder car unless they are into boating, fishing, contractor or hunting. If the auto makers make a good product that is affordable and meets our needs they get the sales.