Every time your wife orders a new piece of furniture for the house, you use it as an excuse to add another Craigslist Patrol to the driveway...
(Sorry to you ladies... No offense intended

Or,
You know you own a Patrol when:
Burning your entire Saturday to drive 650 miles, covering 3 states (and back) to pick up a barely running, heavily modified deathtrap sounds like a perfectly reasonable and logical use of your entire day (and evening) off.