The last time Dale Earnhardt Jr. was at Daytona International Speedway he was busy becoming a Twitter phenomenon, inventing the Victory Lane "selfie" and, oh yeah, winning the Daytona 500. With the NASCAR Sprint Cup Series shifting south to the birthplace of American stock car racing, Earnhardt finds himself in the midst a five-race stretch of supremacy that rivals the start of his 2014 campaign, when he burst out of the gate with the Daytona win and a pair of runner-ups at Phoenix and Las Vegas. More...