VIDEO: Aerodynamics adds 7 miles to Volt electric range
In the latest in a series of videos on the Volt development program, Tortosa describes the evolution of the Volt's shape as it has made its way to production form. Rather than a model, she uses a smoke wand to show the air-flow over one of the pre-production IVER vehicles. From concept to production, the Volt picked up seven miles of electric driving range just from changing the shape of the body. The rear, where the air-flow separates from the body, is one of the most critical areas and has to be carefully shaped to avoid uncontrolled turbulence. The final Volt shape came in second only to the tear-drop shaped EV1 (cD 0.195) in drag coefficient but with a more conventional four door body.
[Source: General Motors]
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