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While one can estimate the weight and cross-sectional area of a cat, the drag coefficient is more difficult to determine.

For a given speed, the higher the drag coefficient is, the more drag an object feels.

That said, Audi claims that the sedan styling has resulted in a lower drag coefficient, and says it’s possible the vehicle will squeeze a few more miles out of the same 95kWh battery pack.

Independent studies have confirmed a reduction in the ball’s drag coefficient this season — which permits more carry — and one study, published by the Athletic, pinpointed “demonstrably lower” seams as one likely culprit.

It turns out it is all about drag coefficient.