Once upon a time, a CI (that's Confidential Informant) was sitting in an undercover car with two men of the Law, awaiting several perpetrators of evilness.
It had been about twenty minutes or so, and the car was in idle for that whole time. This car was a really old Toyota, circa 1980 ... a real fixer upper, if you catch my drift. Anyways, after these twenty minutes, the car, for no explicable reason and perhaps just because it thought it would be funny, began to smoke violently ... from under the hood, out the tailpipe, hell even the vents in the car were producing acrid smells.
About this time, the perpetrators came home from an illegal transaction and began to look on curiously. Two large, plain clothed men ran from a smoking vehicle and made a b-line for the woods; meanwhile, a short, stocky, rather dusty and choking individual fell out of the car whom they instantly recognized. Not understanding what was really going on behind the scenes, they ran up and called 911 without thinking about where they had just been or what they had in their possession.
True story; at least, that's what they tell me.