When I was an Emmissions Specialist here in The Other Washington, we fought the bastards.....they wanted to suddenly go back to 1968 and inspect cars they had not been inspecting.
Things like Fiats, with their obtuse emissions controls rotted off and laying alongside the highway years prior....
Anyway, the WA morons took their cue from the California Head Morons at CARB.....who had decided that "old cars produced emissions, new cars did not", and had credits for mass polluters if they would buy (and scrap) "old" cars....
So, California set up this big roadside media event.
Portable emissions testing equipment, and CHP.....
Pulled over a mom in her environmentally-current soccer-mom-coach.......all the media cameras going....and it failed.
Ooops.
Next car, Yuppie in his new, low emissions small car......failed.
About this time, the bureaucrats are getting edgy....
So, they see this 1973 Cadillac coming down the road.
Ah-HA!
Pulled him over.
Passed.
That caused a major re-think in emissions....our state went from testing 1968 and newer to a sliding scale of 25 years old and newer.
Older cars tend to be BETTER maintained than new ones.
Now, an ancilliary to the story:
As a Washington State Emissions Specialist, we got invited to events just for said specialists.
Had an evening meet at a testing facility.
"Bring your own car, we will hook it up and show you how the entire process works".
So, I took my 1950 Ford Tudor with a Flathead V-8.
Them freaking morons were rolling on the floor laughing.
"It will never pass!"
Shut them up.....and I still have the copy of the test results in the glove box.....marked "pass".
I remember when the "official" mentality was diesels did not pollute......
Finally, they started looking at "particulate" matter, and "oops!".