Cars that run on vegetable oil? Do-it-yourselfers and entrepreneurs alike fill 'er up with the nation's fastest-growing propellant
- By Frances Cerra Whittelsey
- Smithsonian magazine
Sean Parks of Davis, California, collects his cooking oil from a fish-and-chips restaurant and a corn-dog shop. He purifies it chemically in a 40-gallon reactor that he built himself for about $200. The processed oil can be used even when his car's engine is cold, at a cost of about 70 cents a gallon. Parks, 30, a geographer for the U.S. Forest Service, makes enough processed oil to fuel his family's two cars.
Kantor and Parks are willing to go the extra mile to reduce their dependence on petroleum and cut down on pollution. But these days environmentalists are not the only ones banking on biodiesel, as diesel-engine fuel made from vegetable oil is known. Entrepreneurs and soybean farmers are creating a new biodiesel industry, with some 300 retail biodiesel pumps nationwide so far. Commercial production of biodiesel grew 25 percent in 2004, making it the fastest-growing alternative fuel in the United States. Even the singer Willie Nelson recently started a company to market the fuel at truck stops.
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