NEWTON, IA - JULY 28: William Byron, driver of the #9 Liberty University Chevrolet, stands in the garage area during practice for the NASCAR XFINITY Series US Cellular 250 Presented by American Ethanol at Iowa Speedway on July 28, 2017 in Newton, Iowa. (Photo by Daniel Shirey/Getty Images)

NASCAR is undergoing a youth movement, because it has to


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