Several years ago I was behind an 18 wheeler on I-20 when the right rear dual wheels came off his trailer, drifted right, missed a car as they bounced across the access road, missed two cars in a Dairy Queen parking lot, and then sailed through the wall of a machine shop. No one got hurt, and the truck kept going as if nothing had happened until I pulled up along side and got his attention.
I heard the folks in the machine shop were really surprised.