Stewards explain controversial Kostecki/Mostert clash Supercars‘I’m not about that’: Kostecki, Mostert react to wild incident Supercars‘What a joke’: Mostert and Kostecki explain Christchurch crash Speedcafe.comSupercars champions Chaz Mostert and Brodie Kostecki collide at high speed in fiery fight for Jason Richards Trophy 7NEWSDrivers react to wild Mostert and Kostecki clash V8 Sleuth