What's the plural of lexus? lexi or lexuses?

What's the plural of lexus? (the car...)

There's a lot of arguments as to what it should be - Lexi, Lexus, Lexera, or Lexuses . With Lexi and Lexera, both use latin arguments based on the root origin of the word. Which is fine, except for one thing - when used to describe the car, its no longer a word, but a name. Which rules both Lexi and Lexera out as the plural.

The Plural of a name is usually an 's' on the end of the name. For example, a Ford Cortina has the plural Cortina's, not Cortini or Cortinera. So, the plural of Lexus (the car) is Lexus' (with the ' ) since you don't add an 's' to the end of a name that has an s at the end already (essentially 'Lexuses' in the correct grammatical form).

Well, that's the way I see it... any other ideas?

I'm pretty sure its just Lexus as both singular and plural form

It's just confusing. If you saw 3 lexus/lexuses/lexi/lexera, what would you say?
A) There go 3 lexuses
B) There go 3 lexus
C) There go 3 lexi
D) There go 3 lexera

Might just be what you feel more comfortable with. Might be none of them, might be all of them. I jut say Lexus for both.