Watch Top Gear Australia Season 1 Episode 5 Online

The Audi R8 is claimed to be the 'practical supercar'. "It looks like a nuclear powered supercar but it's really practical," said Charlie. "It's like a non-threatening scud missile, safe explosives, or user friendly hand grenade." His 'Top Gun' moment blasting down the tar mac leaves little debate on the issue. While in town the lads also enter their DIY style amphibious masterpiece in Hamilton Island's prestigious Audi Race Week. Getting into the spirit of the week-long sailing event, the lads get busy converting their own Audi into a road and seafaring machine. Enter the NautiCar or as the lads dubbed it - the Audi H2O. But will it sink or swim? Warren and Steve stretch the 'Toorak Tractor' phenomenon to its limit. 4WDs are meant for the bush but they're so common in affluent suburbs they've become known as 'Toorak Tractors'. How will Toorak react to a real tractor as a shopping and commuting vehicle? Steve also checks out the sporty BMW 135 Coupé. And Australia's favourite Idol, Shannon Noll (What About Me, Drive, Loud), is the "Celebrity in a Bog Standard Car".