We were somewhere around Barstow, on the edge of the desert, when the
drugs began to take hold. I remember "Ala"
saying something like:

locally they only seem to grit most of the time, even
with
plough equipped lorries, despite having some rural black (or is it white)
spots.



I think this is actually kinda gross.

I assume you're a Septic?

"Black Spot" in the UK, refers to a place where traffic collisions
regularly happen. The "white spot" of the OP is a pun on snow.

HTH, HAND, ********, etc.