There’s going to be racing this weekend at the Southern Iowa Speedway in Oskaloosa.  The Musco Lighting Fall Challenge will feature the Mid State Machine Stock Cars, Oskaloosa Quality Rental Sportmods, Parker Tree Service Hobby Stocks and Auto Crafters Sport Compacts—along with the Wingless Sprint Cars. Warmups start at 7:00 both Friday (9/20) and Saturday (9/21) nights, with the racing at 7:30.