Hbriz
Ballroom Blitz
But these regions are way too far apart to make a road trip work (that could be made into an episode, I mean).
You seem very opposed to the idea, but why? It's the only continent left that they haven't done any episodes in, and whats stopping a longer trip being made into an episode? Its not as though they broadcast the whole lot. And the distance from Darwin to Adelaide is 3000km, and can be done in just over one day if you really want to, with driver changes and what have you.