A nuclear powered car would be lethal, as the shielding requirements are quite substantial. The concept has been considered though (http://en.wikipedia.org/wiki/Ford_Nucleon). Try highly developed areas of high population density connected by an electric rail network. The power source could then be nuclear. The problem is that recent development has been based on oil dependent transport. Oil is believed to have formed from algae, and there is a huge amount of research being conducted at present to commercialise the production of oil from harvested algae.
Billy
http://www.ipsnews.net/print.asp?idnews=34239
With respect to the surface areas needed to produce biofuels, he indicated that soya produces 50 cubic metres per square kilometre per year, colza (rape seed) produces 100 to 140 cubic metres, mustard yields 130 and palm oil 610 cubic metres, while algae produce 10,000 to 20,000 cubic metres of biofuel per square kilometre per year.
