hmm... I've renamed my S85 (subthread? nah.), after some thought (okay, I was sitting and charging at the Edison SuperCharger and had time on my hands).
I wanted something almost anthropomorphic - I'd like to be able to refer to my car as an individual. It's almost as much a companion as my smartphone, and it still has a bit of the flavor of being out there ("Edge City" doesn't cut it for me). Currently I wound up with RDanl - 'Dan' if I'm talking to the car (you know you do), and a cross between R. Daneel Olivaw and Dan'l Boone.
Well, it'll last until another bout of idle time at an SC.