Supply and demand.(china and domestic overpopulation)
Lack of new refineries.
Lack of refineries that can refine the heavy crude.
Lack of alternate fuels.
Lack of electric cars.
Lack of sufficient nuclear plant capacity to reduce dependence on
natural gas.
Lack of sufficient nuclear plant capacity to power electric cars if we
had them.
Auto companies that aren't innovatiog or otherwise don't care about gas
mileage. I mean, why can't I buy a diesel hybrid that I can run off of
vegetable oil? Why no hybrid that can run off ethanol?