T. Allan Hamilton | September 16, 2017 Practice and Qualification | AUTO: SEP 16 IndyCar - GoPro Grand Prix of Sonoma
AUTO: SEP 16 IndyCar - GoPro Grand Prix of Sonoma

SONOMA, CA - SEPTEMBER 16: Graham Rahal (#15) in the Honda powered, United Rentals / SoldierStrong IR12 during practice 3 for the Verizon Indycar Series, GoPro Grand Prix of Sonoma held at Sonoma Raceway, Sonoma, CA. (Photo by Allan Hamilton/ Icon Sportswire)