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Component - Drag coefficient
Forebody - 0.05
Afterbody - 0.14
Underbody - 0.06
Skin friction - 0.025
This set of numbers is based on an existing car body (not a brick), which already has the front area reduced in size, compared to the maximum cross section area of the passenger compartment. I agree with NASA, streamlining the front does help, and it gets the overall shape closer to the "template".
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