I'm pretty sure that these are Tesla Motors stock that Jay McCormack (Tesla Aus Sales Mgr) has ordered to keep them going until Model S in 2013!
There are currently 5 vehicles for sale on carsales.com.au and it looks like he is still taking orders for new cars.
In Australia there are no rules preventing Tesla Motors taking out a dealer license.
The one featured here is Jay's demo that he has been using for test drives and events, I'm pretty sure I recognize the plate.