Autos

Flickr: Abandoned Cars
Cars abandoned in the streets all over the world.
http://www.flickr.com/groups/98378256@N00/

Flickr: Carmageddon
Artistic, rather than purely technical, pictures of abandoned cars and trucks.
http://www.flickr.com/groups/carmageddon/

Flickr: Graffiti Van
Sharing photos of vans which have graffiti on them.
http://www.flickr.com/groups/graffitivan/

Flickr: Man with Van
This group is for pictures of signs and flyers of men (and women), advertising their vans for hire or the actual, preferably road-beaten, rusty, graffiti-covered and crudely-painted vans themselves.
http://www.flickr.com/groups/manwithvan/

Flickr: Old Trucks
A group sharing photos of old trucks, sometimes derelict but always old.
http://www.flickr.com/groups/57594941@N00/

Flickr: Rusty Old Cars
Cars and trucks that are rotting away.
http://www.flickr.com/groups/rusty_old_cars/

Flickr: Wrecked Ride Away
Derelict vehicles, including bicycles, tanks and anything else that runs on wheels.
http://www.flickr.com/groups/22875052@N00/