Following in the footsteps of Jeff Gordon and Tony Stewart before him, NASCAR’s most popular driver Dale Earnhardt Jr. is the latest in a long line of the sport’s iconic figures to announce his plans to step down from racing. With 2017 set to be his final season, Mobil 1 The Grid spoke to ‘Junior’, driver of the Hendrick Motorsports #88 car, about the reasons behind his decision, and the legacy he hopes he to leave behind.