Pettiness is so relative......
I think we all were brought up by our parents with a list of etiquette 'dos' and 'don'ts'.
I'm not sure exactly where this list came from or if it even really exists, but you all know the one......... it includes stuff like:
Keep your feet off the dinner table.
No picking your nose in public.
No cutting in line.
Hold the door open for the person behind you.
Don't interupt people when they talk.
No phone calls during dinner hours.
No excessive outside noise after 10pm....
and so on..........
LOL, I am not sure if I ever heard anything about exhaust pipes being mentioned on this list...........unless it falls under one of the other categories???