McMillion never competed in a full season, but made the most out of what he had. He would earn 18 top-10s (29% of starts), including a career-best finish of 5th at Hillsboro in 1968. Yet it was in 1964 when he earned a career-high six top-tens and career-best 30th in points.
After finishing 14th in a 1969 race at Richmond International Raceway, McMillion hung up the helmet.
McMillion passed away on June 5, 2015.