Superior, Wisc – Heavy fog has conspired to force cancellation of Friday night’s AMSOIL USAC National Sprint race at AMSOIL Speedway before the cars ever took to the track. The middle-America swing continues Saturday night at Deer Creek Speedway in Spring Valley, Minn. and Sunday night at Angell Park Speedway in Sun Prairie, Wisc.

USAC Sprints at Superior, WI is Fogged Out