A more general comment: in brainstorming custom plates, I had two sections in my list of candidates: negative and positive. The ones in this thread's poll would go in the negative section. Examples from the positive section: ELECPWR ELECAR GIGACAR (I live not terribly far from the "Gigafactory"), AJZ3T (mirror image, so doesn't really work for rear plate), NIKOLA.
Here's the entire negative section -- they were all available recently in Nevada, which has a 7-character limit:
GASLESS
NOEXHST
WHATGAS
OUTOGAS
GAS NOT
GAS NO
PSSDGAS
SHUNGAS
GOBYGAS
GAS HUH
NONGAS
GASNOPE
I decided early on to go positive. I'll withhold what I chose until the plates are delivered -- not that's it's so great, but I provided only that one selection on the application and wouldn't want to be usurped.