Is it live able? Put it on Craigslist for free.
Anything around it that will catch fire?
If not see if an excavation company will cut you a deal on hauling the metal away for scrap. First remove the tires and the windows and light it on fire (notify the local fire dept. first.
Within a few min. all that's left is scrap metal.
A few hours with a excavator and a dump truck and it will be gone except for the concrete blocks.