I was at a Christmas lights thing at a Catholic shrine in December. A lifted F-350 (may have been bigger than 350) came through. It literally sounded like a train was driving through before I saw it and I kept thinking, "There are no railroad tracks going through a shrine..." When the truck was maybe 30 yards away, the guy hit his horn long and loud. Train horn in his truck. I'm guessing a lot of people left their skin.