goodbrad, there's nothing wrong with driving slowly. Just stick in the leftmost lane that you can.
Nobody gets hung up about you driving slowly on the autobahn, autostrada or motorway. Just obey the rules and be courteous. And they do, and are.
Failing to keep left when overtaking is a two point offence in Qld. Driving with foglights is a one pointer - but far from enforcing disciplined behaviour the police promote it.