Quote:
Originally Posted by tasdrouille
Please look up the formula for aerodynamic drag. All else being equal, 2% increase in frontal area will increase aero drag by 2%, there's no way going around that unless you believe the Cd of the car to be lower with mirrors than without.
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The "all else being equal" completely changes the statement, as the Cd of the mirrors could be and most likely is, sustantialy different from the body.
A rectangular block with the same frontal area as the Volt will not have the same drag even thought the frontal area is identical.