Guy Adds Boat Tail to Car, Increases MPG by 15.1%

via TreeHugger on 1/4/10

boat-tail-geo-metro.jpgImage courtesy of Wired Darin Cosgrove has increased the fuel efficiency of his car by 15.1% by adding a homemade boat tail made from cardboard, aluminum and duct tape to the vehicle. This isn't the first mod he'...Read the full story on TreeHugger