The sausage factory chiefs examine the $$ impact of a new recipe before moving forward.
Part of the process:
https://www.youtube.com/watch?v=AB0TFTVTb7U
You can see at least part of what Leno had to say in that video.
I should note that I have a 1999 BMW that requires rolling smog, and I have no issues accessing a station that can perform that test.
I think I pay the same amount for that test as I pay for another vehicle (a 2002 model) that requires just a plug in test.
Again, my 1975 911 REMAINS smog exempt.