A local National Guard unit had a WW2 vintage 75mm pack howitzer fall off a truck that was going down the highway.
I can actually imagine that. All sorts of stuff falls off of trucks around here. Several months ago it was a huge excavator that fell off a truck moving it to a new construction site. When I was in my late teens, one night, near midnight, a guy lost a cabin cruiser off its trailer. This was on the highway about 500’ from my parents house. I was studying for an exam, heard it, went down to investigate, headed back to my p’s house to call the Sheriff. About the time I picked up the phone I heard a “bang” — a Chevy Corvette had hit the boat. I quickly gave the dispatcher the location and hurried back out. No one really hurt, but, the guy with the boat was on some sort of meds (or maybe off) and rather emotionally messed up. Luckily a State Trooper showed up and took control of the situation — the local Sheriff’s Deputies were a bunch of doofus’es. It was quite a night. Somehow I did ok on that exam the next day...