World’s Largest Truckstop & CAT Scale to be Featured on History Channel’s Modern Marvels

World’s Largest Truckstop and CAT Scale to be Featured on History Channel’s Modern Marvels WALCOTT, IOWA — Iowa 80 Truckstop, The World’s Largest Truckstop, and CAT Scale Company will be featured on the History Channel’s Modern Marvels series. The one-hour show will air June 13th at 10:00 p.m. eastern time and is focusing on truck stops.