Seems like it would be wisest to use up all of our cheap fuel first. Like oil, coal, natural gas, etc...
Moving to a more expensive alternative will just mean cheaper natural fuels for the rest of the developing world. It is a losing proposition for whatever country moves away from oil, and a win for everyone that stays pat.
And since productivity levels show no sign of leveling off, whatever research and development we do today will be much cheaper and easier at a later date. Let the laptop manufacturers, who already have an economic incentive to improve battery technology, subsidize the future research.
I think we are forcing economic decisions due to pressure from extremists, rather than due to reason, or pure economics.