The New Model 579 UltraLoft is the first major redesign for the truck by Peterbilt since the 579’s debut in 2012. Photo: Jack Roberts It felt good to be behind the wheel of a brand-new tractor-trailer ...
Greg Dam, a 35-year veteran of Yellow, drove one of the first of the company's new Model 579s off the Peterbilt assembly line. Yellow Corp. is refreshing its fleet with an order of 1,222 Peterbilt ...