We're allowed 7 letters on personalized plates in Maryland. Here's some I've considered:
NATEZ (Most likely choice)
ZIP IT
DONT CRY
4CYL LOL
A E I PWN U
5TH SNSE
NO HEMI
HI MOM
TI EVOM (For the people who stare at me in their rearview mirror, and still don't move over)
DEUS EX (Latin for "God out of a machine")
ZYA LTR (If I get a Z/28)
And a couple that I thought were funny, but wouldn't do:
STFU PLS
SO SOLLY
CAMARO5