That street sweeping scam... they got busted for that already, when they didn't have any working street sweeping machines, but were still issuing tickets https://justacarguy.blogspot.com/2015/03/street-sweeping-tickets-given-despite.html
Parking meters came in 4th, and wheel cramping - lets face it, that's outdated by cars that don't "slip" out of gear. When's the last time you heard of a car in the city on a hill just popping out of park and sliding down a road?
I never have. I'm certain that's been kept on the books only to issue tickets and pull money out of citizens.