That's amusing in that the LA basin had an infamous "smog cap" for a good stretch of the XX century. Helped a lot getting those seminal strict emission laws in California, I believe.
Yep. LA in the 70s and early 80s was pretty bad. The irony that I'm escaping to here for the clean air! It is really good now, and china can really turn a corner in the future if they work hard enough at their pollution problem. Unfortunately, I just can't wait for that.