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: Pirelli umbrella girls at the GoPro Grand Prix of Sonoma held at Sonoma Raceway, Sonoma, CA. (Photo by Allan Hamilton/ Icon Sportswire)