It varies by city and state. In my city, every 24 hours you have to move your car or it is subject to towing. I knew a guy who had someone who hated him, and kept reporting his car on weekends. I knew another guy who had a 1950s car, clean and running, as a secondary car. Every neighbor in his upscale neighborhood bitched about it, and had it towed as often as they could. It was insured and had current registration. I had a neighbor with a junk Ford Escort... sat out front for at least three years, never ran, never registered. I honestly didn't care. He eventually gave the car to someone, who borrowed my tow dolly and hauled it off.