We bought a 2005 4WD F250 Extended cab Superduty long wheelbase ute and new Palomino Real Lite 1608 pop top slideon camper to travel in and will keep it for now to return in the future.
Travelling over here in the US is a bit different to Oz, so many more people everywhere and we're fortunate in some respects that we are travelling "out of season" as crowds are far less than they would be in season.
On the flip side lots of places are closed for winter and while we have had snow, ice and all sorts of weather it is only now starting to get a bit on the cool side. We will probably start to head further south from Colorado to hopefully a bit warmer weather. Temps here are around -1 overnight and up to 9 during the day but the gas furnace keeps us nice and warm.
We've had down to -13 and 10" of snow earlier in the trip at higher elevations, totally different to Oz and a new meaning to cold

Canada is in some ways similar to Oz as far as population density goes with large areas of the Yukon and BC having virtually no inhabitants so bush camping is relatively easy unlike most of the US which has people living pretty much everywhere and the rest is in Forests and National Parks. National Forests are good for campsites but just pulling off most roads for the night is pretty hard at times.