I always thought vanity plates were easier for cops to remember. About once a year I've *had to* choose to avoid impending tickets "by use of throttle and large steering inputs" - mostly through local neighborhoods (somehow calling it "outrunning a speedtrapping oink" seemed too, um, pompous). As they inevitably watch me - most likely speeding - by and for a brief period of time appear in the rearview, I'm not too anxious to put an easy-to-recall badge back there. It's paid (or rather, has not cost me) to have a low profile thus far. Especially as overpriced german marque-mobiles outnumber everything else in my dot-communist town.

Of course, if you have the sack, why not order "COPSSUK"?