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Old 04-06-2012, 07:11 PM   #5 (permalink)
Sven7
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Location: Warren, MI
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Boo Radley - '65 Ford F100
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As I'm told, one of the points of a boat tail is to allow the pressure built up with the front of the car to come back together and "squeeze" it forward as it moves aft. Kind of like when you take a bite out of a sandwich and all the mayo squirts out the other side. Your teeth are the airflow on the rear of the car and the mayo is your car being gently pushed forward.

Ducting air through the middle would do nothing but waste interior space, as drmiller has mentioned. It would be more effective to introduce rear end taper and reduce frontal area.
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