Yes, anecotes are not evidence, but this article is interesting. https://jalopnik.com/5885287/how-i-put-750000-miles-on-my-ho...
And besides, you can buy a car for 4k with a lot of miles. At that point it's like a dishrag. You use it to do your job until you need a new one. Blows up by the side of the road? Tell your customer that happened, buy AAA, and depending on how bad it is, you can fix it yourself after it gets towed home, or junk it and buy another.
Or am I missing something?
http://aircarecolorado.com/index.php/consumer-information/20...
If I'm reading this right, this just means if your car is older you have to get it inspected.
I somehow doubt that classic cars (Mustang, Camaro, Corvette, 510) are banned anywhere in the country - they might have to meet more stringent tests.