The automatic wing raises at about 57 mph. It seems that it could be programmed to deploy at 35 mph or any speed necessary. So the theory that the fixed wing is needed because of acceleration after 60 mph doesn't hold water. It could be the fixed is larger than the automatic wing; or maybe Chrysler just wanted to make the srt 6 different looking than the previous model (cheaper to change the wing than any other part of the car).