From Jayski.com:

Late Caution caused by roll-bar padding; Burton upset; Gordon guilty? #31-Jeff Burton was not pleased with how a piece of roll bar padding created a caution flag about 35 laps from the finish. Burton hit the wall on lap 268 and cut a right front tire. He pitted on lap 281 and fell a lap down. He needed the field to go through its final pit stop under green to catch back up with the leaders but never got the chance when the caution came out for the roll bar padding. "We were going to be OK and then they threw a caution because of a roll bar pad,'' Burton said. "NASCAR should stop every car on pit road and check for roll bar pads and whoever threw their's out should be fined 185 points and $100,000 because it was a huge impact on the race. ... It is starting to happen just too often and NASCAR gets on everybody when it happens. Well, they should find out who did it and penalize them.'' The roll bar pad appeared to come from 10th-place finisher #7-Robby Gordon's car, NBC video showed. "I definitely did not throw anything out of the window,'' Gordon told NBC after the race. NASCAR did not penalize Gordon, citing the video was inconclusive.(Roanoke Times)
AND NASCAR's John Darby, the Nextel Cup tour director, said his inspectors would go through the various team haulers checking race cars for missing roll-bar padding: "It was a very large piece of something black and round, and we don't know what it is when everybody is running at 190 mph. Now trying to prove whose it was is another story. But we'll be going through every car as they load them. But that's not to say it might not have been just under somebody's seat."(Winston Salem Journal)(10-30-2006)