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Old 11-16-2011, 07:05 PM   #5 (permalink)
aerohead
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spats

On low-drag cars,the wheels and tires can constitute half the drag.
You might consider going beyond spats and consider actual canoe-fairings as you see on aircraft,high-mpg concept cars,university mpg record cars,and university and corporate World Solar Challenge cars.
These devices will pay the largest dividend and are not as elusive,design-wise, on a car-to-car basis.
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