We have a Launch Green/Forest Edge R1S on the way. My wife asked about a name, and given that it's so much bigger than my usual daily driver, so capable and so green, I suggested "The Hulk". (Custom plate: "Angry").
My wife hates it. "Jolly Green Giant" (plate: "JollyGG") is too long. She suggested "Kermit" (plate "not ez"), but no thanks.
If we stick with the name-related-to-color theme (what my wife always does with her cars; I do sometimes, but sometimes I break the mold and sometimes I don't name them at all), I could probably get away with calling it "Olive" (plate: "drab"). Maybe that's one we can both live with.
Olivian? Hellagreen? Bullfrog?
I'll probably just call it "the Rivian". And I won't get a custom plate. (Though my wife has had "Elechik" for over a decade).
EDIT: The R1S is now here. We call her Olive. Her rarely-used last name is Oilless.
R1 T2. Since R2 D2 didn't make sense and, technically since it is the adventure trim it is the "second" version of the R1T.. It's a stretch but...anyway, it fits, El Cap with Xpel Stealth wrap. (r1-B in picture)