Where are you getting this idea from? Most really old cars are exempt from emissions rules, and I've never actually heard of someone failing an SO2 test (smog,

Where are you getting this idea from? Most really old cars are exempt from emissions rules, and I've never actually heard of someone failing an SO2 test (smog, which _isn't_ CO2) unless something was egregiously broken with their engine, like a missing cat. They even have state-certified mechanics that can fix your car if it fails smog. It barely affects the used market at all. Inhalers without CFCs are cheap in every other country in the world. Your problems with the cost of healthcare here have little to do with some rules around CFCs.