It's not uncommon to see super jacked up Fx50s in the bay area (usually F150/F250/F350, I think the larger models are probably more common in other parts of the US). Perhaps he got a good deal on one recently, and imported it to Australia - those things were almost impossible to sell when "gas" (petrol) was over US$4 a gallon (it's now back around US$2 a gallon, under US$2 in some states, above it in others - I wonder if the demand for insane vehicles will pick up again).