Carrie Underwood performs at Iowa Speedway during IndyCar weekend

Indycar Iowa Speedway Carrie Underwood

IndyCar in Iowa: Bigger concerts, higher stakes for Hy-Vee weekend

Hy-Vee INDYCAR Race Weekend at Iowa Speedway

Rahal, Harvey & Lundgaard Head to Hy-Vee INDYCAR Weekend in Iowa With Momentum From Toronto Win - Rahal Letterman Lanigan

INDYCAR schedule: How to watch the doubleheader at Iowa Speedway

Ticket sales up for Iowa and Detroit in the wake of Long Beach success

PRUETT: IndyCar's Iowa price hike is a massive gamble