justjohn - what he might mean is if you accelerate harder, the weight distribution changes. For instance if I accelerate lightly, the nose of the car raises slightly, raising further if you accelerate harder. However, since the co-efficient of drag is the most important thing, and you are correct on speed vs wind speed vs drag is the biggest variable, I think rolling resistance would be a bigger factor. But i think he is talking about the angle of the car when the weight distribution changes. Sort of like if you took a brick in the wind, with the wind driving at you straight forward the surface area exposed is simply the front. Change the angle and the other portion exposed will be underneath, then the wind would be also flowing along other variables under the car. However, at a low speed, I don't see how this would be a very large variable. I think a light foot is better still
