Jeff Gordon clinched victory at Martinsville to guarantee that his final race in the NASCAR Sprint Cup Series before retirement will be for the 2015 title.
A spectacularly dominant display by Kevin Harvick keeps the reigning champion in the Chase against the odds - but six-time champ Jimmie Johnson is out.
Matt Kenseth won the final race of the regular season, as the full 2015 Chase line-up for the NASCAR Sprint Cup title play-offs is decided at Richmond.
Brad Keselowski out-witted Kyle Busch on the final corner of Talladega Superspeedway to win Sunday's Aaron's 499 Cup race in a green-white-chequered finish.
Danica Patrick's accident at the end of the first Gatorade Duel on Thursday stole the headlines from the race winners, and had even veteran racers wincing at the impact.
F1 driver Lewis Hamilton got to try out one of NASCAR's stock cars, while Tony Stewart was also given the chance to take the McLaren-Mercedes F1 car around historic Watkins Glen.
Jamie McMurray drives the #26 Ford for Roush Fenway Racing, which must pare its roster from five to four teams, per NASCAR mandate, at the end of the season.