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Old 09-06-2012, 07:47 PM   #5 (permalink)
Sven7
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Join Date: Aug 2011
Location: Warren, MI
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Boo Radley - '65 Ford F100
90 day: 13.28 mpg (US)
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Quote:
Originally Posted by stillsearching View Post
What about covering the half rear of the bed, and also having a slope down from the cab on the front half?
Half tonneau or full aero cap... I don't really think there's a worthwhile middle ground.

You could just drive 2 seconds behind a semi the whole way and get better FE improvement. My Rabbit usually does 32mpg but when I slipstreamed on a highway trip I ended up with a 36mpg tank... and that includes 50 miles of "spirited" driving!

At 60mph and 3 seconds behind a truck, the surrounding air is going 10mph slower, as if you were driving 50mph. Try it! Also, X2 on folding back the mirrors, using a grille block etc.
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