By Tom Bowles Here’s our expert preview of the Ally 400 at Nashville Superspeedway, along with fantasy driver picks, Vegas odds, start time, and TV channel as the NASCAR Cup Series returns from its break to make its second visit to the Music City. The NASCAR Cup Series returns from its final off week ready to roll in the Music City. The Ally 400 at Nashville Superspeedway kicks off a summer sprint to the finish, 10 races to end the regular season held at a variety of track types: short tracks, intermediates, road courses and pack race superspeedways. Nashville stands in a category somewhat by …