Drawing on vintage racing footage from TV's "Car and Track" show, top NASCAR driver Dale Earnhardt Jr. takes a fond look back at the early days of NASCAR racing. Mixing footage, fact and trivia with his own reflections, Earnhardt describes an era (the late 1960s and early '70s) in which drivers such as Richard Petty, David Pearson, Bobby Allison and the Yarborough brothers were defining the sport.