Chris GraythenGetty Images Dale Earnhardt Jr. is so dedicated to the idea of NASCAR returning to Nashville Fairgrounds Speedway that he has already devoted the biggest asset the industry has for its hypothetical return. Himself. Since retiring from full-time Cup Series competition in 2017, Earnhardt has raced once a year in the NASCAR Xfinity Series for JR Motorsports. Should Speedway Motorsports Inc. and the City of Nashville close out on an agreement to bring NASCAR back, Earnhardt has already said he will enter the first race back. During a press conference before the ARCA, Super Late Model and Pro Late Model tripleheader over the weekend, he took it a step further and said he would race at the Fairgrounds every year until he completely retires if NASCAR comes back to the Music City.