As far as the po-po go, they're everywhere, all the time, and it's everybody else's fault!

I found on my recent trip up and down the Hume the closer I got to sydney, the further the other cars were from the speed limit (faster or slower, made no difference, nobody was doing what the signs said) easily 50% of the highway patrol I saw in NSW had someone pulled over.
Last month a mate and I drove from WA to NSW, both WA and SA seem to have drivers that stick to the posted limit (on the highways at least), and aside from a pair of cars setting up spikes on the WA/SA border, we didn't see one patrol car across two entire states.
Victorians have taken the "wipe off five" to heart and only ever do the speed limit by accident, downhill with a tail wind, I think that's because vicpol seem to have spent all their money on unmarked cars... ...well, that's my observation on the matter.
Having a UHF On 40 in most places, or 29 in the top half of NSW means you can listen to the truckies, and they know where the police are with surprising accuracy, if you can decipher what they're on about, sometimes they are legitimately dribbling crap lol - but going faster uses more fuel, and when you're on a multi-day drive, any time gained speeding quickly gets lost in traffic and toilet breaks or u-turns because the friend's daughter SWEARS she saw a camel and we HAVE to go and look at it.... (there was no camel)