As of this week, part of the Stuart Highway in Australia's Northern Territory has had ALL its speed limits removed.
A 200km (125 mile) stretch can now be driven as fast as you like for the first time since 2007 when the speed restrictions were put into place. Before 2007, all the roads outside of towns were speed zone free, but safety lobby groups campaigned the State government to implement a general speed limit (of 130kmh I think).
That's now been overturned as it was proven that on this stretch of road, 6 people have died in a 10 year period - all deaths were contributed by alcohol, seat belts and fatigue - not by speed.
I hear that the Ferrari and Lamborghini Clubs are organising some sort of grudge match up there to sort out a few misconceptions and bragging rights.....