Consider Saturday night’s NASCAR Sprint All-Star Race a preview of Coca-Cola 600 things to come – a battle between a champion whose Charlotte dominance is unquestioned and another who’s red-hot in 2013 but has yet to win at the 1.5-mile speedway. Jimmie Johnson, a three-time 600 winner, won his record fourth All-Star Race. Kyle Busch, whose Charlotte Driver Rating of 107.7 ranks second only to Johnson’s 111.7, was the third-place All-Star finisher after winning two of the four 20-lap segments. Busch finished third in last year’s 600.