 Complete the following phrase:  This was the final NASCAR race for driver Marcos Ambrose, who will be returning to V8 Supercars in his native Australia next season. It was also the final NASCAR race for crew chief Steve Letarte, who will be leaving Hendrick Motorsports, where hes worked at since he was 16, and moving to the broadcast booth for NBC Sports next season. After four decades of being a crew chief and winning races in four decades, Jimmy Fennig retired from the sport after the checked flag flew. Racing is what makes him tick and the competition, Matt Kenseth said of Fennig. Its hard to argue that Jimmy isnt one of the best crew chiefs in the garage. Theres not many people that have been in the sport as long as he has and remained relevant and competitive as long as he has. Ill never forget when we won the Daytona 500 in 