This is what many cities in the U.S. looked like before the EPA.
Why the heck would anyone celebrate deregulating it?
Driving down into the Los Angeles area in the early eighties. Down into the red haze, photo chemical smog, acrid to breathe.
Remembering German cities of that time that stunk of diesel.
Remembering cars of the seventies that only partially burned their gas, and chugged out hydrocarbon volatiles.
It was gross.