Do you put them up on cinder blocks in your front yard and strip them for parts in your spare time?I purchased a '75 LTD for a hundred bucks once, because I wanted the engine. I thought it had a 351 Windsor, turned out it had a 351 Cleveland 4 bolt main. I sold the engine and transmission for $500, the front bench seat for $50, and found $28 in change all around the car. After that I sold the body for scrap and got another $70 after the towing fee.
Made out pretty well on that one.
I've purchased a lot of parts cars and stripped them.
You could plant bamboo around them to improve the aesthetic look.