FOX | 6:00 pm
The longest race on the NASCAR Cup schedule goes off today in Concord, N.C., where drivers will face the unusual conditions posed by dusk at Charlotte Motor Speedway in the Coca-Cola 600. As day segues to twilight and then night, grip changes on the 1.5-mile oval, thus forcing drivers to adapt if they're to keep their cars under control. Brad Keselowski was up to the challenge a year ago, as he surged ahead after a restart on Lap 404 to beat Jimmie Johnson to the finish line by . 293 seconds for the victory.