In today's context, Holden's Torana TT36 concept revealed at the Australian International Motor Show in 2004 could not be more relevant given the current sales success of the Mercedes Benz C class. Given its compact dimensions and rear wheel drive architecture, this concept could really have been a game changer for Holden had it gone into production. Its experimental twin-turbo 280 kW version of GM's 3.6 litre Alloytec V6 just oozed potential. For me, this was a golden opportunity lost.