This artists rendering provided by IndyCar shows an IndyCar featuring an aeroscreen (windshield). IndyCar will use an "Aeroscreen" developed by Red Bull Advanced Technologies for cockpit protection beginning next season. The safety piece will cover the cockpit with a ballistic screen anchored by titanium framework. (Chris Beatty/IndyCar via AP)

The car driven by Chris Windom (17) rides on the top of the car driven by David Malukas after a crash in the fourth turn during the running of the Indy Lights Freedom 100 IndyCar auto race at Indianapolis Motor Speedway, Friday, May 24, 2019, in Indianapolis. (AP Photo/Larry Drake)

Tony Kanaan, of Brazil, waits for the start of the final practice session for the Indianapolis 500 IndyCar auto race at Indianapolis Motor Speedway, Friday, May 24, 2019, in Indianapolis. (AP Photo/AJ Mast)

A weather alert is posted on the scoring pylon as severe weather moved through the area before the start of practice for the Indianapolis 500 IndyCar auto race at Indianapolis Motor Speedway, Friday, May 24, 2019, in Indianapolis. (AP Photo/R Brent Smith)