2:00 in: Conductor toots a "Shave and a haircut - 6 bits" pattern on the horn. Made me chuckle! Edit: This likely originated at the Port of Los Angeles. They poured stoopid money into infrastructure in that region 20 to 30 years ago to improve ship, train and truck flows and capacities. It's still a bottleneck though. But yeah, that's a huge load.