Biffle, who began his NASCAR career in 1995, is the first of only three drivers that have won a championship in both the Busch Series and the Craftsman Truck Series, and the sixth of only thirty-six drivers to win a race in each of NASCAR's three national series. Biffle returned to NASCAR in 2019 when he ran the 2019 SpeedyCash.com 400 for Kyle Busch Motorsports, which he won.