I remember a lot of car commercials, particularly the jingles.
"Wouldn't you really rather have a Buuuu-ick?"
"Datsun [DatSUN!] We... are... DRIVEN!"
"Chevy Citaaaaaaaation!"
"Taur-US! Now there's an American car with a shape and style we've never seen before."
As far as test drives go, I've beaten the shit out of every used car I ever drove. I scared the ever-living shit out of a salesman in Escanaba back in the '90s test-driving a Starion ESi turbo automatic, and my friend Todd and I beat a '95 Mazda RX-7 R2 twin turbo so badly we were sure it would go home on the hook, but we didn't break it. That may have been the harshest-riding production car I've ever driven, but it was a hoot on Spaghetti Junction in ATL.
I never broke one, but a friend of mine broke a few of 'em, including leaving a Ramcharger halfway up the slope at Indiana Mine (site of the infamous Tercel hillclimb), then walked to the nearest payphone for a ride and to call the dealership where the truck was stuck. I still don't know what he broke, but between 4-speed manual transmission, clutch, and transfer case, it wouldn't find neutral and roll backward off the hill. I may be mistaken, but he also blew two gears out of a Renault Fuego Turbo pounding the shit out of it on Barton St. not far from here, but didn't tell the dealer about it when he limped it back.