OT for a second, this happened to us when I was 15, me and my grandpa were driving behind my uncle and dad going up north for deer hunting and the wheel flew off and up into the trailer itself leaving the rest of the components to leave a scar on 75 for about 100 ft. They ended up welding the wheel onto the harness as the trailer was going up north for the last time and they limped it up north. A 4 hour drive turned into 10 with the repair.