Mack Trucks’s ‘Jack’ leads ceremonial laps at NASCAR’s Pennsylvania 400 at Pocono Raceway

LONG POND, Penn. – “Jack,” a custom-built, all-wheel drive, mega crew cab Mack pickup truck, led the ceremonial laps at the Pennsylvania 400 last weekend. The truck was named in honor of one of Mack Trucks’ founders, John (Jack) M. Mack, the one-of-a-kind…