DAYTONA BEACH, Fla. _ NASCAR has made a series of changes for the 2017 season ranging from a new top-series sponsor to how the cars are set up to race.
It's a continuing effort to reverse a trend that has seen the sport's profile dip in recent years, with television ratings and attendance in a steady decline.
With the season set to begin in Sunday's Daytona 500, it's worth looking at what's changed _ and what specifically precipitated each move.
