The NASCAR Xfinity Series race at Iowa Speedway was full of twists and turns. Riley Herbst kept it going even after the race. Herbst did not appreciate the way Mayer raced him late and let him know about it. Sam Mayer was busy doing his cool-down lap, getting his plan ready for his celebration. It is the first time that Mayer picked up a win on a short track. Riley Herbst, who has a single career win from Las Vegas last season, got into his opponent after the race. A quick bump and the left rear was taken out by Herbst. Mayer had to do his victory burnout with just three tires. He managed to d…