Six Verizon IndyCar Series drivers will participate in on-track testing Aug. 12 at Indianapolis Motor Speedway
The 9 a.m.-5 p.m. ET session will incorporate a Firestone tire test to be conducted with Marco Andretti in the No. 27 Andretti Autosport Honda and three-time Indianapolis 500 winner Helio Castroneves in the No. 3 Team Penske Chevrolet, along with four drivers participating in team testing on the 2.5-mile oval.