G'day Donpato,
I have not been there for several years, although from memory it was passable by two wheel drive if care was taken, lots of corrigations and some water holes in the shaded areas. The road runs behind the sand dunes, last time I was there I passed a Gemini and an old Hiace, I'm sure some one here has driven it more recently than me, don't worry the Challenger will kill it.
Cheers,
Disco teddy.