1986 Accord. Locks go ERRRR, only AM radio works, muffler fell off, the name says it all...
"Dammit! my (insert cool car here) is in the shop. Guess I'll mob the hooptie to work."
"Well, it might be a hooptie, but hey, it's got it's own class of demolition derby."
The archetypetal hooptie is a beaten 70's-model American car with dark tinting and flashy (if not actually expensive) rims, but may include anything from an iced out Geo to a dilapidated van or Honda.
Compare with beater; contrast with whip.
Features include: a plume of blue oil-soaked smoke coming from the exhaust - general odor of beer vomit and french fries - a Kraco stereo with a 10 year old Nirvana cassette stuck in the player - flat white, flat blue and Bondo red in color.
2. Any Saturn automobile ever sold.