As an example my sister lives in a county in Colorado that doesn't do emissions testing. I bought a car - 2001 Subaru Legacy - from her several years ago and had to pass emissions as I do live in a county that requires it. It failed spectacularly. The car was not 'seriously ailing' either. The forward O2 sensor needed to be replaced and then it passed just fine.
Granted from what I hear California has pretty strict emissions requirements, but it's not necessarily a cake walk outside of California either, although sometimes it is. It's highly variable.
Cops will pull you over if your brake/head lights are out.
The first thing I noticed when I went to South Africa was the older cars on the road. Some cars that I remember from my childhood but had completely forgotten about until that point. I never realised the turnover in the UK was so high until I came back.
You are delusional if you think your police force isn't racist. ESPECIALLY the customs officers, but also regular police.
I was watching some mental health videos online just last weekend, and I watched some from britain. And ... firstly minorities and the very poor are obviously overrepresented in these "groups". Second the "patients" are terrified of these mental health professionals. Utterly terrified. Thirdly, there is a clear difference in reaction patterns between white and black patients, and between muslim and non-muslim ones.
So just stop. Your police, and many other parts of the British state is explicitly attacking these people, on racist motives.
Just stop claiming otherwise. This is not incredible, this is normal.