Toyota put on a race to find the most-efficient drivers

The Sonoma Raceway traditionally hosts Indy and Nascar events where cars sprint around the track at breathtaking speeds, burning thousands gallons of gas pulled from the remains of long-dead dinosaurs. The Toyota Prius Challenge is, in nearly every possible way, the exact opposite of that experience. Instead of speed, competitors are graded on efficiency. Toyota picked 20 teams to drive around the track in identical Prius' and tasked them with pulling as many miles per gallon as possible during a 40-minute, nine lap "race." But the streamlining squads needed more than just a light foot.