[FED 387]

also tire width ,fender flares, ground effects ,spoilers, unnecessary openings in the grille area, upward lift attitude of the front end at speed as opposed to downward attitude--elimination of any unnecessary body parts ( mirrors etc.) ---all these affect airflow over under and around the vehicle ---You want to make the vehicle silohuette as smooth as possible ( within any rules restrictions course)--as vehicle speed increases it becomes of paramount importance to consider all of these----look at a jellybean as opposed to a brick and or a Corvette vs. a Van and you will get the idea--- modern auto manufacturers go to great lengths in "styling" their products not only for looks but to achieve the tinyest of drag reductions to increase fuel mileage