Pipeweld

Exxon Mobil Diversifies Into the Hybrid Car Market

It is called a fuel cell. Still very much under development.
Ethanol also has a much larger foot print cradle to grave than Gasoline.
ea. plow, plant, spray, harvest. haul to refiner, truck to terminal(you can't send it by pipeline to crossive for that.). But that is not politically correct for the environmentalist.