near future, hybrid. distant future? maybe hydrogen...from pebble bed reactors, or maybe natural gas
i don't understand this hype with enthanol in america. the corn that is currently being processed into ethanol is reportedly taking up more net energy than it is producing. its also quite expensive...unless they improve farming and processing methods, i don't see ethanol as a viable alternative.
also, i don't think there is enough arable soil in the united states to farm the amount of corn necessary to provide a decent alternative to oil. they better have a good trading partner ready if the government is serioius about ethanol.