Rev Up Your Biofuel Engines

The world's first completely sustainable race car is gearing up for Britain’s Formula 3 race on Oct. 17.

Researchers at the University of Warwick created a car entirely made out of recycled materials that runs on biofuels, such as chocolate and animal fats, and is lubricated by plant oils. It’s fast, too, with an 0-to-60 time of 2.5 seconds, and a top speed of 135 mph.

There seems to be a trend toward greener races; even  longtime environmental offender NASCAR has jump-started environmentally friendly races and is encouraging its fans to be green.

--Julie Littman