Jamie Whincup: Van Gisbergen's impressive NASCAR win, previewing V8s in Townsville

Jamie Whincup, seven-time Supercars champion and boss of Triple Eight racing, joins Martin Devlin on It's Only Sport, reflecting on New Zealander Shane van Gisbergen's incredible victory in his debut NASCAR race in Chicago. Whincup was Van Gisbergen's teammate for six years at Triple Eight and is now his boss, and talks to Martin about how incredible the Kiwi's achievement is and what it could spell for his future. They also discuss the upcoming Townsville round on the Supercars calendar.