FILE - Tony Stewart celebrates his International Race of Champions (IROC) championship in victory lane at Atlanta Motor Speedway in Hampton, Ga., in this Saturday, Oct. 28, 2006, file photo. Superstar Racing Experience (SRX), disclosed the format it will use Thursday, May 6, 2021, to The Associated Press when the all-star series launches this summer at Stafford Motor Speedway in Connecticut on June 12 for the first of six Saturday night short-track races across the country. Stewart and co-founder Ray Evernham modeled the series after the popular but defunct International Race of Champions that pitted drivers from multiple formulas in identically prepared cars at various tracks for 30 years. (AP Photo/Gene Blythe, File)

In this March 8, 2021, photo provided by SRX, Ken Scrader, left, laughs with Ray Evernham during SRX testing at Caraway Speedway in Sophia, N.C. The car will definitely not be the star this summer in the Superstar Racing Experience, which has been formatted for drivers to showcase their skills using what series co-founder Ray Evernham calls “old-school tools.” SRX disclosed the format it will use Thursday, May 6, 2021, to The Associated Press when the all-star series launches this summer at Stafford Motor Speedway in Connecticut on June 12 for the first of six Saturday night short-track races across the country. (Garrett Pace/SRX via AP)