The most interesting thing about Jeff Burton pointing his finger in Kyle Busch's chest and shouting at him on pit road Sunday night at the Coca-Cola 600 was Burton was just three days removed from praising Busch's driving style.
It didn't go unnoticed.
"I guess all that nice respect stuff he talked about earlier this week is out the window," Busch said. "I guess that's how I race everybody."
On Thursday, Burton said he likes racing Busch and thinks that while Busch puts his own car in precarious positions, he doesn't disrespect others' space.
Sunday he swore at Busch and told him, in more colorful language, to watch it, fueled by the frustration of finishing 25th in a race in which he could have garnered a top five.
"The least he can do is stay off of me, he cut the left rear tire," Burton said. "I like racing with Kyle, I really do. I enjoy it, but when he gets overaggressive and I pay the price for it, I won't tolerate it."
10 things we learned:
1. Something serious to start this: Kevin McDowell, the right rear tire changer for Greg Biffle, was treated at a hospital and released. He had no broken bones but was sore and bruised and will be "off his feet for a few days," according to a Roush Fenway Racing spokesman. He was hit by Tony Stewart coming out of the pits.
2. There were frequent problems coming out of the pits. At least two other drivers slid out of theirs and nearly hit another.
3. Kyle Busch was not especially amused when Charlotte Motor Speedway presented him with a FedEx box that contained boxing gloves and M&Ms.
4. The tiff between Busch and teammate Denny Hamlin goes back further than the All-Star race.
5. Jimmie Johnson really wants to race in the Indy 500. Johnson, who drives in Rolex 24 Hour races, said he'll do it if the start times change to allow the double and he can find a way to get Chevrolet and his wife, Chandra, on board.
6. Busch and the No. 18 team have a new commitment and focus on a championship.
7. Busch is through with the full Nationwide schedule for exactly that reason.
8. Chip Ganassi and Roger Penske have a lot of respect for each other. And their NASCAR campaigns are looking pretty strong.
10. Red Bull Racing is swapping team personnel, including crew chiefs, for the No. 82 and No. 83 cars. The change was prompted by Brian Vickers' leaving the series after suffering from blood clots.
— Tania Ganguli