I just received some more grey nomad data, this time for some more NT, however those areas had already been mapped, and for part of western Qld through to the south east.
A lot of the western Qld data hasn't been mapped already so this will also be pretty useful, also the property boundary data is very ambiguous and not very helpful south east of Mt Isa.
osm.org/?lat=-24.15258&lon=144.48909&zoom=16
Also in this area:
osm.org/?lat=-24.23536&lon=144.66226&zoom=16
Unfortunately there is a gap in the GPS data so I've guessed mostly where the road should go, but at some stage will need to be revisited to tweak it.
In any case I think I've been donated about 10,000km of GPS data, just need to find some more grey nomads now :)