Dale Earnhardt Jr. pulled over for speeding to NASCAR race at Texas

 -- FORT WORTH, Texas --? Dale Earnhardt Jr.?is still driving fast, even though he has been sidelined from the NASCAR Sprint Cup Series because of a concussion.

Earnhardt was pulled over for speeding while driving to Texas Motor Speedway on Sunday morning before the AAA Texas 500.

His fianc?e, Amy Reimann, who was in the car with him, posted a picture on Twitter of a police officer writing out a warning for NASCAR's most popular driver.

According to her tweet, Earnhardt didn't get ticketed. She didn't say how fast he was going.

When asked on Twitter how fast he was doing, Earnhardt responded, "Not fast enough."

Earnhardt first began experiencing concussion-like symptoms in late July. He said in September he would miss the rest of the season. He plans to be back in the No. 88 Chevrolet for Hendrick Motorsports for the start of next season at the Daytona 500.

Even though he's not racing, Earnhardt is still doing appearances at the track, and he watches some of the race from the No. 88 pit box.

The Associated Press contributed to this report.?