Well, actually we had to pull over for 15 minutes to allow this "road train" to get way ahead of us as it was impossible to drive in it's dust! I'm back again to continue my holiday story :)
Great image Denise, in 2005 I was driving in the bush and saw this cloud of dust getting closer totally unaccustomed to this sort of thing wondered what it was as we passed the driver gave us a cheerful wave then I was totally engulfed by the red dust had to stop to let it clear, we know all about road trains now, lol:)