Watkins Glen, famous former home of the US Grand Prix, hosted the 4th annual Green Grand Prix, a race that focuses on (obviously) green car categories. Darin Cosgrove of MetroMPG took the prize in his category and also achieved a whopping 99.7 MPG in his heavily modified roller skate Pontiac Firefly, a clone of the Geo Metro and Suzuki Swifts you know from having a crush on a cheerleader in high school who had one. While hypermiling is not for everyone, it’s cool to see someone literally double the mileage of the best factory-spec car, the new Toyota Prius.

The race covered a 77 mile road course over public roads with a double-nickel speed limit, and contestants had just over two hours to complete the course before being penalized. Read more about it over at the Ecomodder blog.

[Source: Ecomodder]