The list of young and up-coming stars in NASCAR Xfinity 11th Annual U.S. Cellular 250 at Iowa Speedway is long, with six of the nine 2018 NASCAR Next class being entered, highlighted by Ryan Vargas making his series debut.  From La Mirada, California, the 18-year-old is driving the No. 15 JD Motorsports Cranio Care Bears Chevrolet.  Also an alumni member of the Drive for Diversity program, Vargas is thankful, looking to make the most of all opportunities he is given.