[just dreamin]

My opinion, based on driving in the Northern Territory, before and after the 130 km limit is;
1. the dvrs sitting on anything greater than 120 continuously seemed to be public servants / govt cars as they didn't pay the fuel bill.
2. They were pulling into the next fuel stop as their range was limited. (petrol sedans)
3. They were not driving at this speed at night because of animals so they wanted to get between Darwin/Alice/Adelaide in thirteen or so hours of daylight.
4. I drove a considerable distance at 150 km/hr and watched my fuel gauge act as if I had a large hole in my fuel tank.
5. I think the biggest benefit is being able to belt past a semi and meet Mr Plod in his speed detector equipped cruiser coming the other way and not be booked for speeding.
6. The nuts who drive like nuts don't know/care if the speed limit is 110 130 or 80 kmh.
4.