NASCAR to use All-Star race for research, development again

Brad Keselowski prepares before practice for Saturday's NASCAR All-Star Cup series auto race at Charlotte Motor Speedway in Concord, N.C., Friday, May 17, 2019. (AP Photo/Chuck Burton)

Clint Bowyer waits by his car before practice for Saturday's NASCAR All-Star Cup series auto race at Charlotte Motor Speedway in Concord, N.C., Friday, May 17, 2019. (AP Photo/Chuck Burton)

Chase Elliott, right, talks with a crew member before practice for Saturday's NASCAR All-Star Cup series auto race at Charlotte Motor Speedway in Concord, N.C., Friday, May 17, 2019. (AP Photo/Chuck Burton)

Denny Hamlin waits by his car before practice for Saturday's NASCAR All-Star Cup series auto race at Charlotte Motor Speedway in Concord, N.C., Friday, May 17, 2019. (AP Photo/Chuck Burton)

Kyle Busch jogs through the garage area before practice for Saturday's NASCAR All-Star Cup series auto race at Charlotte Motor Speedway in Concord, N.C., Friday, May 17, 2019. (AP Photo/Chuck Burton)

Denny Hamlin waits in his car before practice for Saturday's NASCAR All-Star Cup series auto race at Charlotte Motor Speedway in Concord, N.C., Friday, May 17, 2019. (AP Photo/Chuck Burton)

Joey Logano waits in his car before practice for Saturday's NASCAR All-Star Cup series auto race at Charlotte Motor Speedway in Concord, N.C., Friday, May 17, 2019. (AP Photo/Chuck Burton)

Kurt Busch climbs into his car before practice for Saturday's NASCAR All-Star Cup series auto race at Charlotte Motor Speedway in Concord, N.C., Friday, May 17, 2019. (AP Photo/Chuck Burton)

Kevin Harvick, left, talks with Chase Elliott before practice for Saturday's NASCAR All-Star Cup series auto race at Charlotte Motor Speedway in Concord, N.C., Friday, May 17, 2019. (AP Photo/Chuck Burton)

Kyle Busch waits in his car before practice for Saturday's NASCAR All-Star Cup series auto race at Charlotte Motor Speedway in Concord, N.C., Friday, May 17, 2019. (AP Photo/Chuck Burton)