That's because your too quick for em Fangio!
I used to winge about getting followed home by the police from Chatswood back in the day, or getting pulled over and RBT'd all the time. It's a fact of owning a performance car. Our cars are more likely to be stolen, crashed or driven outside the law. Now that they have the automagical license plate reading system you will find if you have been naughty in the past you will probably get pulled over more too.
When I used to boot around in my Nissan Patrol I never got harassed by the police, but I wasnt out cruzing at 1am on a weekend in it either and the mods where legal. (Plus it takes a while for the Patrol to get up to speed, and they cant really see you behind the smoke screen).
just 2cents. Most the cops are pritty cool and just want us all to behave. Just remember the attitudes and behaviour they have to deal with next time you wonder why they put on the tough guy act when walking to your car.
One thing I have come to realise is this...
I got a Skyline.. The police hate imports, we are the victims etc etc
I got a Patrol.. The Police hate 4wd's and mods, we are the victims and environmental vandals.
I got a Mountain bike.. Motorists hate cyclists, Greenys hate Mountain Bikers and we are the victims.