The last two years, the rain’s messed up the race here. So I’m thinking, well, maybe I could do something to get the rain away,” Moy said, joking. He based it on the NASCAR “vortex theory,” an inside joke among fans that the cars racing around the circular track can create a “vortex” that pushes storms away.

Shane van Gisbergen has completed a sweep on the Chicago Street Course, winning the NASCAR Cup Series race on the tricky downtown circuit