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Old 10-06-2009, 03:09 AM   #11 (permalink)
lunarhighway
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vectra a - '95 Opel Vectra GLS
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also perhaps this shape is not very favorable when the airflow is off center.
no road is perfectly straight and cars manouvre all the time, so a great portion of your driving the airflow will be comming at the vehicle from a slight angle

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