The GPS challenge offered two interesting firsts in Top Gear:
1) The car lost, which is good since it never happened in 11 series of Top Gear UK and it was about time that the challenges stop being this predictable. On the other hand - the car losing on Top Gear - heresy!
2) The first instance of blatant, obvious racism on Top Gear. From the clich? of the wild man knowing the bush, to the aboriginal leader walking while Warren is riding a horse, the whole setup stank of colonialist, racist views. With zero aboriginies in the team, null aboriginies visible in the studio audience the first one visible of course knows the outback from his heart and walks while the whilte colonialist sits on a horse and makes witty remarks. If Top Gear Australia is half as scripted as Top Gear UK their interaction can only be described as intentionally racist (warren talking, him not reacting), if it was unscripted, it was a case of bad casting (which one could also see as racism) OR should have been scripted more. I intentionally downvoted the episode as 1/10 cause this annoyed me so much.
And no, i am not a political correctness freak. I laughed about Jezzas "Eaten a spaniel" comment, i had no problem with Warren's drawing in Ep. 1, of annoying-voice-guys Taxi Driver impersonation in Ep. 2, i had no problem with "style and passion"-style italy clich?s... but having half of a challenge based on racist stereotypes simply crosses a line.
The main problem of Top Gear Australia, apart from this, is clearly visible in the closing credits: Only two cameramen. TG UK uses at least four, maybe even five cameraman simultanously shooting track action, challenges, everything... Watch the making of of Clarkson's "Supercar showdown" DVD (which shares most of its crew with TG UK) and gape in awe at the sheer amount of cameras and manpower involved. If you film a car drifting round a bend with three cameras from three different angles at the same time you get much better editing possibilites than when you film three drifts from one angle each...
...not to mention the (im)possibilities of getting decent coverage of the track with only two cameras.
edit:
Additionally, a film editor (and tg fan) friend of mine pointed out that they try to copy the blueish color correction look of TG UK, while, at least on a location like the desert a more reddish tone would look much cooler. For an example of this compare an episode of the original CSI (very modern, stylish, cold, blue neon look) with one of CSI:Miami (red, yellow and "earthy" colors emphasize the hot, humid, alligator-ridden-swamp-surrounded Miami)... Top Gear Australia, too, should get its own trademark look, still instantly recognizable as TG, but working with the surrounding, not against it...