If we don't have the battery power to economically create viable electric transportation for city commuters by 2050 I think there's something significantly wrong with our scientific community. Its one thing if this was a goal by 2015 or even 2020. But we're looking at FORTY years from now. Look how much progress has came with regards to batteries from 1990 to 2010. Seriously, I don't see what the big hubbub is on this one to be honest. Its a goal for FORTY years from now that in all honesty should be easily and economically doable.