Looking for free 3d models of wrecked rusty cars, trucks,collapsed buildings etc.

Hello mates, I need some free 3d models of wrecked rusty cars, trucks,collapsed buildings and cracked roads with grass from the cracks. Some rusty lamp posts and a free accurate 3d sculpt of Manhattan.

I prefer low to mid poly ones. But high poly ones are good to as long as they are compatible with Poly Cruncher.