Some people REALLY ARE tools
It's been a few years since I've used one. Usually I can get someone to come haul it off by listing it on craigslist. The last time I had one of those guys come drag one off was in 2004, I think. They always say they'll pay you for your car, but then they don't want to when they show. I always expect them to pull that, so I don't care.
I'll look and see if I can find some numbers for you.