I once got stopped by the police - 3 cars, 2 traffic and 1 under cover.
The undercover stopped me after following me for around 2 miles, as I had been driving through a street were there had been a few burglaries.
They ran a check on my car and found it was registered in “Asian populated city”. So funnily enough, he gave that as a reason for stopping me as he had suspicions. The 2 traffic blocked me in front and back, and undercover at the side of a quiet road. Was it uncessary? Yes I think so.
I gave them my licence, remained sat in the car and let them do whatever checks they needed. The only thing they pulled me on were my side lights were a little blue for their liking, but they just asked me to change them.
After the above I just carried on and went home. My car may have had a marker (note sure) but I didn’t care.
I’ve never really had to deal with the police, but even after a firearms situation they were fine to deal with.
Sadly as mentioned above, if you have a car the sort you do, and look “somewhat” out of place in it then you’ll get the attention by the police in a “awkward” manner.
Friends have had it before in their cars, it’s not fair imo, but at least you’re fighting it.