Wife came home complaining that the car lacked power, wondered if it had anything to do with my repair. Earlier in the day I adjusted serpentine belt tension to eliminate a squeak. A horrible thought immediately ran through my head, and indeed I was right. I had the parking brake set so it wouldn't roll with a jack under it. She left the parking brake on. Aside from a lever sticking straight up, the dash has a large warning light, and I had previously shown her how the thing worked. Thank goodness I didn't buy a vehicle to cherish, partly because I expected it to be destroyed by terrible driving, but still, I bet she also had to ignore smoke from the wheels. That's three obvious fucking things that should tell you to stop the car and figure out wtf.