More than 50 historic Nissan and Datsun racecars on track at Road Atlanta this week to celebrate the brand's 50-year history of American motorsports success. Datsun racing legend John Morton, right, will lead the pack at the 41st HSR Classic Motorsports Mitty presented by Hagerty. He’ll be aboard an exact replica of the two-time national championship-winning BRE Datsun 240Z. Morton will serve as the event's grand marshal this weekend. Comedian, actor and filmmaker and Nissan/Datsun racin...