While sleeping between days 15 and 16, a bright blue light appeared in the garage and I was forced out of bed. One of the doors on the main floor was slightly ajar, and everything in the garage had been seriously displaced. I believe this is an intended event, however, my ATV found itself stuck inside of a wall on the second floor. The image speaks for itself haha. Most of it is outside but the two back wheels are indoors. I was able to free it by reloading the game, though the -28,474 health remained. I think I have the world record for most destroyed ATV.
After driving it off the roof, it blew up, and its health returned to normal.