This week on Top Gear Australia, the boys go 4 wheel driving from central Australia to Cairns in north Queensland. Thats 2,400kms in 7 days. Charlie goes for luxury in the Lexus LX 570, Warren jumps in the Range Rover Vogue TDV8, and Steve feels the power of Audi's Q7. Charlie also test drives the Mercedes SL 63 AMG and James Morrison is the star in a bog standard car.