A tornado warning, replete with threatening funnel clouds, made IndyCar drivers' weekend at Iowa Speedway extra memorable.

Palou had a solid Iowa, with a fifth-place finish in the first race and then a victory (his seventh of the year) in the second race. The Chip Ganassi Racing driver would need an unprecedented collapse to lose the title.

Call Alex Palou’s win at Iowa Speedway on Sunday afternoon ‘Lucky 7’. The reigning Indianapolis 500 champion used a perfectly-timed caution flag to win his seventh race of the IndyCar season. He’s the first driver to win seven of the first 12 races of a season since Al Unser Jr.