Not that hard really. Guy with plates kxkx something or other in a so and so colored evo. Probably not hard to find on the highway. Sounds like your brother is just immature.
Im not related to the guy. The plate is a good idea. lost of guys Run around with
1II1I1I or 0D0DD0
Makes it hard for someone to read and remember at a glance there is no White power reference its a matter of having fun and limiting your liabilities. Much like wearing Camo on the battle field their lawn dart.