How to scrap a car?

around here we have guys that will pay you up to $200 for the car depending on how much of the car is left. They show up with a a flat bed wench it on and take it away. thats what id did with my 72 duster after i stripped it of all the good stuff. I didnt get any money cause it was just a shell not even a rolling one. Just look in the classifieds in your local paper theres bounf to be somepne in there that doesd this!