It's easy driving if you're setup for it. I just travelled from Cue to Brisbane, nearly 5000km and travelled around 900km each day and 1100 on the last day. The difference is that I have a kitchen, toilet, shower and bed on board. Whenever I felt weary I just parked anywhere off the road, walked down the back and dropped to sleep, sometimes for 15min sometimes for more than an hour and I only travelled in daylight hours. It's a bit difficult to take a powernap while souring at 5000ft.