Just so ya know... that horn is used a LOT on tv and in movies for comedic effect! ESPECIALLY back in the 70's/80's! ^^ I remember it a LOT on sitcoms and things over here in the UK. It was kind of... common? I think americans would almost call it White Trash kinda thing to do? And usually on really old bangers and crap cars/vans lol. With fuzzy dice!

Edit: The song is "la cucaracha" and referenced a lot in media over the years! Webmind would definitely know the tune, if not that Ant Man used it for his van lol