Going green: IndyCar to use renewable fuel beginning in 2023
Roger Penske responds to questions during an interview on the victory podium before practice for the Indianapolis 500 auto race at Indianapolis Motor Speedway, Thursday, May 19, 2022, in Indianapolis. Penske took ownership of Indianapolis Motor Speedway just two months before the pandemic closed the country and only now, in his third Indianapolis 500 as promoter, can he throw open the gates and host more than 300,000 guests at “The Greatest Spectacle in Racing.” (AP Photo/Darron Cummings)

Roger Penske responds to questions during an interview on the victory podium before practice for the Indianapolis 500 auto race at Indianapolis Motor Speedway, Thursday, May 19, 2022, in Indianapolis. Penske took ownership of Indianapolis Motor Speedway just two months before the pandemic closed the country and only now, in his third Indianapolis 500 as promoter, can he throw open the gates and host more than 300,000 guests at “The Greatest Spectacle in Racing.” (AP Photo/Darron Cummings)

May. 25, 2022 01:44 PM EDT
Roger Penske stands on the Yard of Bricks before practice for the Indianapolis 500 auto race at Indianapolis Motor Speedway, Thursday, May 19, 2022, in Indianapolis. Penske took ownership of Indianapolis Motor Speedway just two months before the pandemic closed the country and only now, in his third Indianapolis 500 as promoter, can he throw open the gates and host more than 300,000 guests at “The Greatest Spectacle in Racing.” (AP Photo/Darron Cummings)

Roger Penske stands on the Yard of Bricks before practice for the Indianapolis 500 auto race at Indianapolis Motor Speedway, Thursday, May 19, 2022, in Indianapolis. Penske took ownership of Indianapolis Motor Speedway just two months before the pandemic closed the country and only now, in his third Indianapolis 500 as promoter, can he throw open the gates and host more than 300,000 guests at “The Greatest Spectacle in Racing.” (AP Photo/Darron Cummings)

May. 25, 2022 01:43 PM EDT