In the USA there is not much in the way of vehicle inspection which could or not include a pollution test every other year. It varies from state to state and even within different counties in certain states. I am connected to Calif which has strict standards, some 15 years when I was spending far more time in Madagascar I decided to register my vehicle in a free state without regulations and inspections, thus saving time and money.
In Madagascar and in my city of Mahajanga it is curious to see trucks that deliver sand and rock , that have little to no brakes. While the truck is in reverse, men will run behind the truck to place or throw a rock under the wheels to stop the truck,amazing but this is how things are done here. Point being these trucks also pass inspection.
I have been driving for 45 years, and this includes construction vehicles, trucks, and buses, cars motorcycles... in all states of malfunction.  It is very rewarding to take part in the driving of these vehicles with their own personalities.  Once a vehicle is so perfect to drive , well in my opinion it might as well be one of those, self driving vehicles that are now operational in some parts of the world.
Even though Madagascar Inspections are ludicrous, it does bring back some nostalgic memories of me getting my car passed in Calif some 35 years ago and working with the mechanic and his machine to lower the emissions, to beat the system and build relationships. Those were the days and I am comfortable with the ways things are working here because I was once in their shoes.