Drivers feel COT may lead to more accidents at 'Dega  (cont'd)

Jeff Burton concurred, and said nobody's certain exactly what might happen on Sunday.

"I think there's a whole lot we don't know yet," Burton said. "I think we have a tremendous amount to learn about what we need to do with these cars and the reality of it is until Sunday we won't be on the track with 43 cars, and 25 cars [during practice] is not the same as 43 cars."

One concern Kyle Busch has may have to do with what happens after the wreck occurs. He thinks cars may become airborne if they wind up backwards at speed.

"If you look at it, there's the back bumper of the car that's scooping air right up underneath that blade, right underneath the wing," Busch said. "Any time you push air up against something it's going to lift it up.

"So I don't know that there's going to be enough air that goes between the deck lid and the wing, I think it's just all going to get packed up right there and they're going to go airborne. But I guess they're hoping the roof flaps are big enough and strong enough to hold the car down on the ground."

Tony Stewart was fastest in both sessions, running 194.959 mph in the first and 194.054 in the second. Michael Waltrip was the quickest of the go-or-go home cars in Happy Hour, followed by A.J. Allmendinger and Jacques Villeneuve -- but because some cars may have been running in a draft, it's impossible to gauge how they may qualify on Saturday.

When asked if he ever asked NASCAR to explain its decision to give last week's victory to Greg Biffle even though his car slowed noticeably at the finish, Bowyer said it was water over the bridge.

"We didn't deserve to win that race, by any means," Bowyer said. "Biffle had the faster car. Something happened to him at the end. If I had known that, I would have been saying, 'Boy, there's plenty of daylight out here.' But hindsight's always 20-20.

"I assumed they were going to give him the win but it sure would have been nice to have it handed over [to me]."