Exxon has invested $500 million in an algae fuel facility. It costs about $4 per gallon to produce. Then if you add the highway tax it runs over $5/gallon. That is why Obama wants gasoline to go over $5/gallon so he can say algae fuel is cheaper. As Exxon has proven, it will come on line WHEN oil gets to about $150 per barrel. It can be grown in greenhouses, either salt or freshwater kind. For the US to be completely on algae fuel, the greenhouses would cover the area of Rhode Island.
On the other hand, natural gas is $1.84 per gallon without the tax, and the pipelines are already in place around the country. Problem is getting service stations to install the compressors for refueling. GM, Ford, and Chrysler all have said they can produce NG vehicles off the assembly line for the same price as regular vehicles. Fuel tanks are more expensive than sheet metal gas tanks, but a NG vehicle doesn't need a catalytic converter. We do not import natural gas. We have a 100 year supply tapped, a 47 year supply of untapped gas in Alaska but they will not approve a pipeline via the Alaskan highway to the lower 48. Canada has said they would build to the border, but the US said no.
So, we already have an alternative fuel, that we don't import, but can't us it because it is also a "fossil fuel".
As far as exports go, yes we export Alaskan oil to Japan because we can't get the tankers through the Panama Canal. Japan then trades us the oil they buy from the middle east. Shipping is the problem. They want to build a terminal at Southern California and a pipeline to Texas for refining the Alaskan oil, but NO again to pipeline and terminal. Might kill some desert animal.
I hope these democrates on this forum wake up and get anybody but Obama in office to turn the economy around.