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I will try and find a copy of Hucho's book to read. It's a little expensive but seems to be the book of choice if you want to learn about aerodynamics. I was just thinking back to the 60's and 70's. Some station wagons had a curved piece of metal that look liked it would take the clean air from the roof and force it down the back side of the car thus keeping the dirty air from coming in contact with the rear of the car. Anyone ever had a close look at one of these? I have only seen them at a distance.
Al
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