U.S. Cellular 250 Presented by Enlist Weed Control System

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Austin Dillon, driver of the AdvoCare Chevrolet, leads Regan Smith,... News PhotoAustin Dillon,Driver,Horizontal,Iowa,Iowa Speedway,Leading,Motorsport,NASCAR XFINITY Series,Newton - Iowa,Regan Smith,Sport,Stock Car Racing,USAPhotographer Collection: NASCAR 2013 NASCARNEWTON, IA - AUGUST 3: Austin Dillon, driver of the #3 AdvoCare Chevrolet, leads Regan Smith, driver of the #7 TaxSlayer.com Chevrolet, during the NASCAR Nationwide Series U.S. Cellular 250 Presented by Enlist Weed Control System at Iowa Speedway on August 3, 2013 in Newton, Iowa. (Photo by Justin Edmonds/NASCAR via Getty Images)