Michael Stahl took a Porsche 911 Carrera 4 - with a few spacers added to the suspension - across the Simpson Desert. Including Big Red (twice), and the Oodnadatta Track. And all that involves.
Yup - one of the world's fastest sports cars conquered some of the harshest terrain in Australia, with just 100mm suspension lift. With high performance road tyres.
I have a PDF copy of an article in Motor or Wheels magazine, from about year 2000. So, the question of whether a standard modern 4WD will get everywhere is pretty academic, as many guys are saying. Such an awesome article I have managed to keep it for 15+ years.
I'll try to find how I can load the article up. But unfortunately its a hell of a week work wise for me, so that may have to wait a few days.