FILE - In this Nov. 18, 2012, file photo, Mario Andretti, left, talks to Willy T. Ribbs before the Formula One U.S. Grand Prix auto race at the Circuit of the Americas in Austin, Texas. IndyCar is making an improved push to diversify its fanbase and its driving field. Ribbs and George Mack are the only two drivers to ever start an Indianapolis 500. (AP Photo/Darron Cummings, File)

A crew member greets Alex Palou, of Spain, as he pulls in during qualifications for the Indianapolis 500 auto race at Indianapolis Motor Speedway, Sunday, May 23, 2021, in Indianapolis. (AP Photo/Darron Cummings)

James Hinchcliffe, of Canada, drives down pit lane during a warm-up session for the IndyCar auto race at Indianapolis Motor Speedway, Saturday, May 15, 2021, in Indianapolis. (AP Photo/Darron Cummings)