CdAft^2 Coeffiecent drag area x ft area for Corvettes and other high end autos.
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1. 1994 Porshe 911 Speedster =5.92
2. 1995 Lamborghini Diablo .....=6.17
3.1999 Lotus Elise................=6.35
4.1985 Corvette..................,=6.57
5.1992 Corvette..................=6.27*slanted front bumper*