I think someone posted photos of that or one very similar stuck up the high country trying to cross a creek
Or there is this one, I went to a mates property to sus out a good place to camp for a gathering, this came along, this is him going home and crossing the creek to get out of the property, he got stuck going in as well.
On the way there going up Kurrajong on the Bells Line, the transmission over heated, apparently it over heats quite a lot when speaking to him.
His car has a 3.0 tonne tow rating, the weight of the 5th wheeler 2,9 tonne loaded so he reckons, and 2.7 tonne unladen , the towing mechanism in the back is 475kg.