Aerodynamic long tail improves fuel efficiency 15 percent

While windtunnels have long been employed in aerospace and all forms of race engineering, we’re likely to see them employed more frequently in future in the quest for improved fuel efficiency from our automobiles. Ecomodder.com’s Darin Cosgrove recently added this 1.37 tailpiece to his Pontiac Firefly to improve its drag coefficient from 0.34 to 0.23 and its fuel efficiency by 15.1 percent at 90kmh (56mph).

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