Comment by JoshCole

Even today though, Los Angeles is still the smoggiest region in the country [1] [2]. So it's not actually an easy case to say that California doesn't have a need for these restrictions. It's merely technically possible to brush aside a real issue.

[1]: http://www.latimes.com/local/lanow/la-me-ln-bad-air-days-201...

[2]: https://www.sciencedaily.com/releases/2017/06/170619092749.h...