MADISON, IL - AUGUST 24: Graham Rahal, driver of the #15 Rahal Letterman Lanigan Racing Honda, and Will Power, driver of the #12 Team Penske Chevrolet, works their way down the front stretch during practice for the Verizon IndyCar Series Bommarito Automotive Group 500 presented by Valvoline & Axalta on August 24, 2018, at Gateway Motorsports Park in Madison, Illinois. (Photo by Michael Allio/Icon Sportswire)