O’Reilly stock price per share is insane and the upward trajectory over time is always a winner, but like, why?

Upfront, I am not saying “OMG go buy this stock.” I don't do that and I doubt I ever will. Just wanted to get that out of the way.

So I have very few shares (2 I think, lol) which is why I have looked at Oreilly semi-regularly. If you look at their gains over time they never seem to lose, day to day, month to month, year to year, etc. I mostly only know them as an autoparts store chain, so what makes them so profitable? Is it other deals with car companies that we don't see or do they make money off of car sales in some way? What's the deal with them? They're around $940/share at the moment, which, as always, is the highest they've ever been. Apple, microsoft, amazon, etc, doesn't come close to this price so, what's up with that?