Seriously, why?
Life’s too short, etc.
For pretty much the exact same reason I hate txt speak. If I receive a text along the lines of “alr8 m8, whts up wht u? I find it annoying to read. The fact that someone would spend money (sometimes quite a lot) to adorn their car with such grammatical shambles I find pretty tragic. If someone on this forum was posting in text speak on a daily basis he’d annoy a lot of people wouldn’t you say?
As I said, I don’t find car models on plates so annoying, usually because a 911 or a 458 for example can have a plate that says exactly that. It’s a bit brash, but at least it’s not an affront to grammaticality. Initials I can just about tolerate but I find it puzzling why anyone would want to broadcast who they are via that medium.
I spotted a busty milf in a convertible BMW with the registration J120NME.
She gave me a wink when she saw that I had twigged it, dirty mare.
Was she dyslexic?