Kentucky Speedway President Mark Simendinger hopes the track's new pavement smooths the transition to another race with a new NASCAR downforce package. It follows last year's changes here that helped produce one of the season's most competitive races, won by Kyle Busch on his way to his first Sprint Cup championship. ''You won't leave with a headache, and that's the best part about it,'' points leader and 2014 Cup champion Kevin Harvick quipped during last month's test. More...