DIY 'Boat Tail' Gives Little Car Big Fuel Economy

From Wired Top Stories:

In his endless quest to squeeze every possible mile from a gallon of gasoline, our friend Darin Cosgrove has given his econobox a homemade boat tail and boosted his fuel economy to 64 mpg. Cosgrove, the founder of the hypermiling site Ecomodder.com, used cardboard, aluminum and duct tape to extend the back end of his 1998 Pontiac Firefly — as the Geo Metro is known in Canada — by 4.5 feet. The mod took him about 14 hours to do, and the results are impressive enough that he's planning a sturdier version made of more durable materials.

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