hybrid and pure electric cars aren't cheap.

GM says the Chevy Volt will retail for around $50,000 and have a range of about 600 miles. They're pushing for a $10,000 tax credit from the feds, they think they need that much to sell enough units.

$50,000 is cheap?

All these alternative fuels are just that, alternatives. They're the alternatives cuz they cost more than cheap oil. Until oil is more expensive than the alternatives (permanently), consumers will not pay the premium for alternative (expensive) fuels.