Albert Goyette drives this 2021 Peterbilt 579 UltraLoft for Tandem Specialized out of Grayling, Michigan. The rig sports a 510-hp Paccar with a 13-speed. Goyette uses the truck for flatbed ...

Peterbilt's Model 579 has been the company's on-highway flagship since its debut in 2012, but after seven model years even the most cutting edge units lose some of their sharpness. In the automotive ...

Peterbilt Motors Co. has unveiled a restyled version of its Model 579 flagship on-highway truck that offers a 7% fuel economy improvement compared with the truck it replaces, which was launched in ...

Another simple yet effective safety feature is a new notebook for smartphones to allow safer and easier navigation. Photo: Jack Roberts A new brilliantly lit series of gauges can be infinitely ...

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 ...