ORIGINAL: jayski.com
“We went through our normal aero changes here today, just to back up what the wind tunnel has been telling us, and were able to get some quality laps on the track,” said Robin Pemberton, NASCAR vice president for competition. “The wing continues to give us positive results. It is going to provide the teams with a lot of advantages when it comes to competition. We’ll even get more evidence of that when we test the Car of Tomorrow next month at Lowe’s Motor Speedway.”
For Harvick, it was his first time driving the Car of Tomorrow and he was encouraged with his initial test run. “When you get in the driver’s seat, it feels like just another race car,” said Harvick. “We got a lot out of today’s test, because it helps us determine what kind of package we will need when we run the car next season. From everything I’ve heard about the wing, it should be a big help in helping the car behind you get some air on its nose. That seems to be what we’re fighting all the time; the aero push on the bigger race tracks.”

ORIGINAL: jayski.com
COT and the Wing: One item that is expected to be missing in the final version of the car of tomorrow [COT] will be the customary rear spoiler, which NASCAR has used for decades as part of its aerodynamic package. In its place will be a single-element rear deck wing, which was first track-tested at Daytona earlier this year. Monday's session at Bristol will be used to test different wing designs. The wing will represent a dramatic change in the look of NASCAR's stock cars, but according to Brett Bodine, a former driver who now serves as NASCAR's test driver and is heavily involved in the development of the new car, the wing is more in tune with today's modern race cars as well as new showroom models. He added that using a wing will allow teams to build a more symmetrically shaped car rather than the current models, which are cut and bent to shape to permit them to run better on ovals. According to Bodine, the wing will be a bolt-on piece that will be given to teams each race weekend by NASCAR, thus preventing any cheating. The wing will most likely include a small wickerbill/Gurney flap – a right-angle piece of metal rigidly bolted or riveted to a wing's trailing edge – which will offer an additional level of downforce or drag to be produced by the wing. Monday's session also will test the design of the new air splitter located below the bumper on the front of the new car. The splitter is designed to keep the front of the car on the ground. Both the wing and the splitter are items that have been used successfully for decades in sports car racing worldwide.(Yahoo Sports)(3-27-2006)