A recent study done at Stanford found that the best transport solution is electric vehicles powered by electricity from wind plants.
The worst option, in their estimation, is Bush's favo - cars powered by ethanol produced from cellulosic material. I agree that all things ethanol are 100% idiotic and bass ackwards (why would anyone use a fuel that needs its own brand new distribution system?), but wonder why they think cellulosic ethanol is worse than corn ethanol.
This all presumes that somebody is going to figure out the battery problem, of course. Battery problems, really.
1) there may not be enough lithium in the world to make enough batteries for everyone
2) batteries cost about 10x too much
3) pending confirmation of recent research claims, batteries take up about 10x too much space
Primary point being, wind/EV - it has a bright future once we smooth out a few kinks.