Re: Disgusted
"Actually, it was acid rain from particulates"
Caused by the burning of brown coal or residual oil in power stations. There were not enough Diesel vehicles on the road in the US in the 70s to cause significant acid rain. I worked in Diesel R&D in the 1980s with companies like Caterpillar as customers, they were well aware that even trucking companies were resistant to Diesel due to the first cost and the very low price of gasoline.
A lot of the US actions were protectionist, e.g. the California ban on small two stroke motorcycles (imported) despite the tiny contribution they made to pollution.