Junkmobile

"My God!" she whispered. "Sculpture with a living element. Charlie, it's the greatest thing since junkmobiles and tincannia."

Source: wiktionary

Another car appeared in the distance. His view of it was partially blocked by the Volvo's bikes and boat, but he could see that it was some old junkmobile.

Source: wiktionary

The car was something of a Goodnight legend, considered one of the rustiest in a town whose parking lots held more than their fair share of rusting junkmobiles.

Source: wiktionary