Race fans from all over will gather in Des Moines this weekend and the Knoxville Raceway will be there to make sure sprint car fans can get their fix prior to the start of the 2011 season. The nationwide World of Wheels tour will be at the Iowa Event Center Friday-Sunday and the Knoxville Nationals Tour will be on display along with the sprint car simulator and autographs from Miss. Knoxville Raceway. The event runs Friday from 5-10pm, Saturday from 11am-10pm and Sunday from 11am-7pm. Tickets are $13 for adults and $5 for kids ages 6-12.