Dumb ass no-drivin' booty-watchin' fool for sure, maybe, unless he suffered the broken center pin syndrome, possibly as a result of loose u-bolts. So far, I've seen two 550s with bolts so loose that it's damn lucky this didn't happen to them. Don't know if Ford's got a problem or if it's something that's part of a lack of following some prescribed maintenance schedule. The two I've seen were both brought to a friend of mine for alignment because they "are hard to keep in one lane." He found the loose u-bolts on both, one when the left side of the axle fell when it was lifted for inspection. Bet that was a Charmin moment for the tech.