I like cars. I like to drive around in them aimlessly. I would like for my kids to be able to do the same. So we've got to save oil. Save it for gasoline and stop frittering it away on silly things like home heating oil and jet fuel. I vote for lots and lots and lots of propeller-driven turbines mounted on poles - windmills, I think they're called. Wired News says we should be able to power the planet.
There's a lot of empty space out west we could use. Though I guess it's not always breezy.