I'm not sure what other event top poster was referring to, but I would consider driving a car without plates to be especially bad on it's own. That's like willfully excluding yourself from all the car related laws, can't be issued a speed ticket, can't be found after an accident, can't be ticketed for illegal parking and so on. The sheer arrogance of driving a car without plates or with fake plates or with plates illegally swapped from a different vehicle is infuriating. In my country this is done by the most sociopathic rich people there are - criminals "in law", some marginal parliament members, sons of oligarchs etc.