For instance you'll notice most Tesla cars have a sticker on them that says "Access Ok, California Clean Air Vehicle" https://cleanvehiclerebate.org/eng/ev/incentives/hov-lane-ac...
To me it's dumb that the government needs to issue a sticker to know which cars are EV's or Clean Air vehicles. Wouldn't it be more simple to just know that Tesla's and Toyota Prius's are clean air cars than to require people to put stickers on their bumpers that expire every four years in order to get prime parking spaces and HOV access? Additionally, there's a bunch of paperwork involved and qualification processes based on income and other things https://www.dmv.ca.gov/portal/vehicle-registration/license-p...
I'm sure that this bass-ackwards system provides plenty of work though.
I think some laws are passed with expiration dates. I would support more of this to reassess if people still have the will to enforce and support them.