i can across this picture on the internet and i figure that the nascar truck teams must do more aerodynamic testing than anyone. i think that they do not use a aerocap design because i would imagine that the truck sponsors want the trucks to resemble a production truck. so i am wondering if the same results as a aero cap can be achieved with a torrnea cover and a rear spoiler? does the air going over the truck pass over top of cab and then the rear spoiler act as if there is a aero cap on the truck?
also i am wondering why they went with a air dam instead of a belly pan? i can see that the truck is lowered and the air dam is really close to the road with side skirts
i know their concern is not fuel economy but the aerodynamics must apply to fuel economy
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