Affiliate Marketing Secrets

So I have a large scratch on my car door…
These people will come up to me at the gas station or get my attention when I’m at a red light and ask me if I want them to repair it. It’s happened to me close to 10 times in the past few months. And they seem to be all sorts of people, some drive crappy beat-up trucks, and some drive fairly new, nice SUV’s.
What’s the deal with this? Are they all affiliated or could it really be that there are just tons of people out there randomly doing the same thing?
The reason I ask is because it happens so often and each one has the same pitch — also, I can’t find anything online about this. There has to be something online about it!! Is it some sort of scam? It always reminds me of the people who try to sell you crappy stereos “for a fraction of the cost since their manager needs them to get rid of it”.