I went for a wander around the Concord/North Strathfield area this morning and found six abandoned cars - which is a record. One was only 2 months out of rego, but a few had been sitting around rotting since 2008.
Reporting abandoned cars is easy. I simply email Council with a photo of the car, along with a photo of the rego sticker and the street address. They take care of the rest.
When I photograph an abandoned car, I also photograph the nearest house number and the street signs at the nearest cross street - just so I remember where they are when I get home.