Rapid competition for the Tesla Roadster.

One of the cars in next year's Le Mans auto race won't be running on gasoline -- or whatever high-grade fuel it is Le Mans cars run on.
     As part of its work finding and developing  alternative fuels, a British company called D1 Oils has built a race car that goes more than 250 miles an hour on biodiesel. See for yourself.
     Musicians fueling tour buses with biodiesel, Le Mans racing cars running on biodiesel -- how much longer till NASCAR announces plans for the Daytona Canola 500?