Ethanol
The EFuel100 MicroFueler home-brews ethanol by fermenting a mix of table sugar and nutrient-treated yeast in the system's 250-gal. tank. The resulting fuel, which is 99.9 percent ethanol, can either be stored in the unit or pumped into a gas tank through the 50-ft. hose. It takes 10 to 14 pounds of sugar to produce 1 gal. of ethanol, so the cost of fuel is only as cheap as the feedstock. Available in late 2008.
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