Scary damned things, especially when you are not used to seeing anything like that.
Was with a friend driving from Long Beach to Phoenix in 96 I think, He saw it on the horizon and drove about 100 yards off the road until it passed us by.
Crazy thing to experience.
In the early 1980s, I was stationed at 29 Palms in the Mojave Desert. From time to time, I would see these “Walls of Dust” approach from Bear Mountain, tumbleweeds and all. It was always an awesome sight.
I would go bicycling in that weather in the ‘70s. I’d arrange things so the wind was at my back and desired destination ahead. Wore a filter mask and goggles and blinkenlights. Could get up to 45 mph easily.