Eat your veggies, but save the salad oil -- for your ride's fuel tank

Michael Flynn and his pals at Common Vision, a California non-profit, don't want to ever visit another gas pump. They collect used vegetable oil from restaurants, mix it with chemicals, pour it into their 1961 Crown school bus, and, presto -- it works. For five months, they've driven around the West Coast in the bus, fueled by biodiesel.

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