When I posted the shot a few days ago of us following a vehicle, I kept thinking that I thought the dust was worse than it showed. Turned out I was a bit premature and the good dust photos were still to come. That will teach me to look further ahead to see what's coming up.
You can just make out the scrub line on the RHS.
Anyway, tis is a better shot of what it was like trying to overtake another vehicle.