Quote:
Originally Posted by MetroMPG
GM is saying that the Cd depends on the wind tunnel (which is apparently true from, what I've read).
The point they're trying to make is that regardless of the absolute figure, their car is relatively better than the Prius*
(* with 17 inch wheels. Gotta love asterixes!)
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The wind tunnel config too I imagine. Heck, I bet there are sufficient groups of parameters such that cars within .02-.04 of each other or whatever could flip flop in terms of which one has the best Cd.