One other myth of myths is saying that driving a vehicle with the windows open does not effect fuel consumption. Somehow this defy's common sence. For example:

Consider the way cars are designed today. With all the engineering effort to expended to reduce drag It's only logical to conclude that a car with the windows down produces a great deal more drag then one with the windows up. Further the more windows that are open on the sides of a car, the more drag is present. This decreases somewhat if the back or 'moon roof' windows are open on different faces of the car, because they allow air to flow through the car. Still, the drag is more than that of the closed car, because the air slows down considerably once it enters the car and hits seat, you, your dog, or other obstacles. IMHO It's just common sense.

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