NASCAR started life as a performance-based sport starring Detroit's brand-name iron, but over the last two decades this focus has changed. Stock-car racing today is all about the personalities. The sport is based around eminent names, and is almost as interested in the interactions between drivers off-stage as it is in their skills on it. Over the last 60 years, despite the transformations in NASCAR racing, the history of the sport has not been forgotten. Today's top names, such as Dale Earnhardt Jr., Jimmie Johnson, Tony Stewart and Kevin Harvick, reflect the roles once taken by Hall of Famers Dale Earnhardt, Richard Petty, A.J. Foyt and Bobby Allison.