because it's the 41st running of the Corona-Tony Bettenhausen Memorial at Springfield for the USAC Silver Crown dirt cars.
What is so special you say?
How about one AJ Foyt returning to the site of his 1st champ car start to be grand marshall?
Better yet, how about the tremendous points fight in the division itself, and the chance for Donnie Beechler to win in his hometown.
Or the best, go to the IRL website for a big surprise announcement about a member of the Foyt family racing at Springfield!!!!!!!!!