Nice explaination MMZ... I often don't finish my train of thought on a post before hitting the send button...

I wish I could find that darned video that showed the limited coupe' in a smokey wind tunnel, with the wing up and wing down... This video was a side view of the car during some testing, or perhaps for advertisement purposes just before the car was released for sale in 2004.

Granted, I do not know the speeds the wind was blowing, but with the wing down, the smoke looked like a tornado behind the car and the air was flowing from under the rear of the car, back upwards toward the hatch, in a vortex. Kinda looked like jet wash, but horizontally back towards the front of the car.

Then with the wing deployed, it was just a bunch of mush, with a slight trail of smoke rolling downwards off the trailing edge of the wing... But it definately showed that the wing eliminated the upward vortex...

Like I said, I have no idea what speed the wind tunnel was generating...