Below are the driver appearances in connection with the IndyCar races at Iowa Speedway that I know of. Check back because I'll add to the list as I discover any more.
Friday, June 21 -- Helio Castroneves and Ryan Hunter-Reay will appear at the Newton Club (center structure in the Iowa Speedway grandstands) from 5:30 to 7 p.m. for "Horsepower Hour," a live weekly racing-focused radio show. Helio and RHR will be there in person, the public is invited, and it's FREE. The show will be broadcast on "Iowa’s Best Country" KIX 101.1 FM.