CONCORD, N.C. (AP) - Dale Earnhardt Jr. was praised by his competitors for having the guts to seek medical attention that led to him being sidelined Saturday night at Charlotte Motor Speedway.
But, at least one driver wasn't sure he'd do the same with a championship on the line.
"Honestly, I hate to say this, but no, I wouldn't," four-time champion Jeff Gordon said. "If I have a shot at the championship, there's two races to go, my head is hurting, and I just came through a wreck, and I am feeling signs of it, but I'm still leading the points, or second in the points, I'm not going to say anything. I'm sorry.
"You know, that's the competitor in me, and probably many other guys. And, that's to a fault. That's not the way it should be. It's something that most of us, I think, would do. I think that's what gets a lot of us in trouble."
Earnhardt was diagnosed this week with two concussions sustained over a six-week span. He was first injured in an Aug. 29 crash during a tire test at Kansas, but he didn't seek an evaluation for what he knew was a concussion after he left the track.
Then, he had a lingering headache following Sunday's 25-car accident at Talladega. Hendrick Motorsports tabbed Regan Smith to replace him in the No. 88 Chevrolet on Saturday night and next week at Kansas.
2013 CAR: NASCAR asked three drivers at this week's tire test at Texas to run in a pack so officials could get a look at the 2013 car in traffic.
Nobody loved what they saw.
"We feel like we've got a little more work to do with the car and the mechanical grip," said Greg Biffle, who ran some laps in traffic with Kyle Busch and Paul Menard.
NASCAR has been working all year on a plan to improve the racing, and the launch of the 2013 car is supposed to create a clean slate for changes. The hope is to make passing easier, but Biffle didn't believe that was the case Wednesday at Texas.
"They seem to be pretty aero-tight, similar to our cars now, maybe a tick more, but we don't know that because we didn't have any 2012 cars there to compare that to," he said. "So it would be unfair to say they're worse than the 2012 car right now before we make additional changes to them. They were pretty tight behind each other."
But there's more testing planned, and Goodyear is working in conjunction with NASCAR to develop a tire that can improve the overall on-track product.
"I think they've got a lot of ideas to try," Biffle said. "Goodyear is working hard at trying to come up with a tire that complements that so we can get the racing a little more side-by-side."
DRIVE FOR DIVERSITY: NASCAR's Drive for Diversity Combine is scheduled for next week at Langley Speedway in Hampton, Va.
A group of 17 drivers representing 12 states, Canada and Mexico have been selected to participate in the combine, which determines the NASCAR Driver for Diversity (D4D) program drivers for the 2013 season. The drivers compete for the Rev Racing team.
This year's combine will be a three-day driver evaluation of on-track performance, marketing and media aptitude and physical fitness. Langley, a 0.4-mile asphalt oval, is hosting the event for the second consecutive year.
NASCAR is again actively participating in National Breast Cancer Awareness Month, with drivers, teams, tracks, series and team sponsors uniting in the fight against the disease, particularly at Charlotte Motor Speedway.
The start/finish line for Friday night's Nationwide race was painted pink by race sponsor Dollar General, and the grandstand tickets were also pink. Drivers Denny Hamlin and Brian Scott wore pink fire suits and had pink paint schemes for the race, too.
Dollar General also recognized over 300 breast cancer survivors from the Carolinas during pre-race festivities, and made a donation to Susan G. Komen Race for the Cure.
The headlights of Danica Patrick's car in Friday night's race were surrounded in pink as part of a "Check Your Headlights" campaign to encourage mammogram screening for women. Her sponsor, Go Daddy, donated $50,000 to the National Breast Cancer Foundation in support of the program.
In Saturday night's Sprint Cup Series race, Clint Bowyer had a pink paint scheme on his No. 15 Toyota in support of the Avon Foundation for Breast Cancer Crusade. Bowyer said he was getting used to the color and supporting the cause.
"If I'm going to be wearing pink and driving a pink car it better be for a great cause," he said. "Trust me, this is a great cause."