Speed does kill in the wrong hands unfortunately. Doesn't matter how flat and wide the autobahn is or how good your car is. It's all about response time and how much driving experience you have. If you barrel down the free way at 160kph and some idiot gets in the right lane without indicating at 90kph you don't have much time to react. A P-plater won't have developed the reflexes that a more experience driver may have. I also agree that driving at 110kph to Canbera is non sense on such a good road. We could be there in 1h tops instead of 3h.
Maybe they should implement a licence system based on rewards. You start slow as a P-plater. No accidents or infractions? Then you move on to a "faster" licence sort of speak and your maximum speed limit increases. So over time at the other end of the spectrum you will get sound people with experience who are not hoons. Even if they are they
can drive anyway. Ideally this should only be implemented on interstate/city roads and freeways . Residential speeds/school areas limitations,etc... are fine as kids are unpredicatable.