This is two way - Australian version of an autobahn :signlol::signlol::signlol:The Northern territory have ended their trial with a 100 km/h limit which then moved to a 130 limit, they have now returned to an open limit highway, no ticket for speeding unless you are not in control of your vehicle.
Results have proven no limit was safer then having a limit.
Just don't go off dreaming about autobahn conditions,
I bet the speed at which the car is comfortable will dictate the speed not quite as much as the driver.
If you got a long way to go, certain cars need constant prodding to move at faster speeds, I don't think anyone is going to make specific constant effort to go faster if there is no one else around. At least that's generally how I keep my speed unless a play date presents it self.
Doing 60 km's and a big red roo jumping out into you is really bad, so hitting a roo at over 100 km/h and you're pretty well screwed.130 kmh vs big kangaroo or a 15' python stretched across the road would be ugly!!