Considering the amount of beer consumed in the U.S. alone, Budweiser, Miller and Coors could put Exxon out of business in no time. The entrepreneurs behind startup E-Fuel, who have been hawking a washer-and-dryer-sized home ethanol system, called the E-Fuel 100 MicroFueler turns your left over beer into a much more precious commodity. E-Fuel's system requires just sugar plus yeast to create ethanol, which the company claims can be made for a dollar a gallon, which has got to largely depend on the feedstock. One of the product's innovations is supposedly an advanced membrane distiller that can separate water from alcohol with fewer steps and lower heat than other ethanol systems.

E-Fuel will start testing the refrigerator-sized portable ethanol refineries in the second quarter of this year using discarded beer yeast as a feedstock for ethanol. Get set to burp and drive your way for eternity!!

[Crunchgear]