That is exactly how it is here. I only know the details of the Victorian RWC, but I hear that NSW is much more strict... a bit like CA. I have never checked up to see what the requirements are in all the other States and Territories. All motor vehicle registrations, third party insurance and licencing of drivers is on a State by State basis. As are the blood alcohol levels. They vary from .02 to .08. At least the States have agreed on speed limits. We are no longer faced with different limits there... not since the Northern Territory embraced the concept of speed limits. Until a decade or so ago, it was a free-for-all there.
The Carfax program is a totally different thing. Here a similar prgram is administered by the RTA (Road Traffic Authority).