Drive SF to San Diego a few times a year and there are a few all along the route when going off the main freeway, more in rural areas, but present. See a few while bicycling through Santa Cruz mountains to west of San Jose, there's one house I regularly pass in Pescadero that has two - it only takes a few miles of driving outside of downtown Los Gatos to get to more rural areas.

I have a close friend who spent a lot of money so they could “roll coal” on people. Only one person, but he talks about it a lot. A lot.

He claims that he likes spewing this out onto people he doesn’t like. He’s never mentioned how awesome it is to pollute or anything. It’s the equivalent of spy hunter smokescreen.

Not uncommon in most rural areas, from my observation. I see it weekly, more or less.

I see people rolling coal several times a week here in Texas.

Yes, pretty routine in small town rural Oregon.

Some out of towner in a pickup truck did this to me in SF. I was on a Vespa.