Yes Rowan.

When I was involved in Rallying, the only was was to get the latest Govt maps (they now call the Qld ones Sunmap) - from memory the 1 in 100,000 series was the basic. I seem to remember that there were some 1 in 10,000, but as you said, they tended to not always exist for everywhere, unless the Aussie Army felt that it might have need to go there... back during WWII... when did they put THAT road there?