It is, indeed, a cement truck! The owner parked the truck, a dump truck, and a backhoe in the yard when he was running his one-man cement company. He has since sold the other equipment and moved to Oregon or some such.

I'm sure the refuse and detritus from the eventual clean-up of the property will bring in some compensation, but emptying things out before then will be the majority of the work, most of it thankless.