Maybe a great idea from down under.

Very interesting -- essentially an RV in a big box on a shelf in back of the truck. Attach the legs, lift the box, drive out, and there is your freestanding unit. Good video.

Two comments -- it looks like it would be wobbly on those spindly legs.

And it looks tricky to back the truck back into position under the unit without hitting the legs. Not impossible, but difficult.