Not everything in a final product is for functionality but a balance between that and aesthetic styling. For example did I really need 2 giant dimples in my fender for non-existant fog lights? I think not. Probably doesn't make a mjor difference in Cd but I don't know how smart it was for divots in the first place though I suspect cost was a factor vs a plastic covering over the divots.
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My 5 pillars of fuel efficiency:- driving style
- aerodynamics
- tires
- weight reduction
- engine maintenance
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