Here's a short video crossing the 220nm across the Simpson and its 1100 sand dunes. WE followed a track called the French Line and thought we might see one or two vehicles - but we came across this convoy of about 15 vehicles in the Variety Charity Bush Bash!
https://youtu.be/hOCXlK7GF5k
The chart looks interesting with the predominant features being the sand dunes!
cheers
r