It's the end of an era at Bathurst — and Supercars as a whole. Supercars set for seismic change Photo shows Jamie Whincup's Red Bull-branded Holden drives ahead of two Ford Mustang cars, one black and one red Some fans believe Holden's demise spells the end of Australian motorsport as we know it. Chaz Mostert wins Bathurst 1000 Photo shows …