I have always wanted to set up a dishwasher in the garage, using a small hot pass through hot water heater, to clean auto parts. Figure find a cheap one used. Then the waste plumbing. hmmm.
Friend of mine used to wash parts in his. Nice and clean. That worked right up to the night his dear ex wife came home early. Caused a real ruckus.
Still, it was a great way to get them super clean. And who needs a wife with that going for him?