Preview of Sunday night’s IndyCar race in Madison, IL

President of the Indianapolis Motor Speedway Doug Boles joins Bob Sirott and Dave Eanet to talk about the upcoming Bommarito Automotive Group 500 race Sunday night at World Wide Technology Raceway in Madison, IL (near St. Louis) and the significance of that race track. He also shares some of his personal stories with David Letterman attending races and why people are returning to the IndyCar Series as viewership increases. The race can be heard Sunday night beginning at 6:30pm on WGN Radio 720 and our digital streams.