Sure, NT may have unrestricted speed limits, but that's because they are dead straight, with no traffic. Roads in NZ are overcrowded, and the government can't do much because we don't have toll roads, and often windy. Lots of roads here it would be literally impossible to do 130km/h in your average car. I'm sure NZ would never get used to 130km/h roads, because of the standard of vehicles (mostly crappy used Japanese imports, due to our lax import laws), and the ability of most drivers here. Because NZ is very 'multicultural', there are lots of drivers from certain parts of the world which aren't renowned for good driving ( I won't name countries, at the risk of generalizing/being racist).
I may be wrong, and I'm not trying to insult you, but I've found Dutch/German tourists to be some of the most inconsiderate drivers here. Because most roads are single lane, we can't just pass when we like, so we rely on slower cars/ motorhomes to pull over and let cars going the speed limit past. I've been stuck behind Germans driving motorhomes that seem to be completely oblivious to the 50+ cars held up behind them at 70km/h. Which brings us to another side effect of NZ's poor roads- Road rage :twisted:
And I'm not sticking up for NZ- I wish we had no speed limits!!