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Old 06-07-2010, 05:36 PM   #9 (permalink)
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Join Date: Mar 2009
Location: Western Mass
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moby van - '03 Dodge Caravan SE
90 day: 19.74 mpg (US)
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There is not so much a "dead zone" as a high pressure area with reduced air flow. The high pressure there makes more air flow around that area rather than through it, reducing any effect that streamlining is likely to have. The side mirrors are in a High flow area since the air that hits the front of the vehicle flows around into that area, increasing flow.
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