Indianapolis Motor Speedway (Penske Entertainment), Racer, 'Indy 500 announces attendance plans' (Apr. 21, 2021): 135,000 fans, 40 percent of capacity (Ex. SEC-06-GM-044)
Indianapolis Motor Speedway (Penske Entertainment), IMS 2021 Indy 500 135000 Fans 40 Percent Capacity (May 27, 2021) (Ex. SEC-21-GM-039)
