There’s a way to send people a sort-of ticket, if you live in a smoggy region.
Dial 1-800-EXHAUST and give the plate number and the car description and date time and place.
They will send the purp a message that looks like a real ticket that tells them to get a smog check.
My mom got one on her new car and knew from the time and location it wasn’t for spewing smoke but for fighting over a parking spot.