I haven't ever owned my own car, but I name my computers. The first laptop was Titan, this one is Adonis.
But I helped name one of my friends' cars: there was BAM. It was The Beige Marauder but then we were shortening it and it was BM but then that's bowel movement so we decided to call her BAM.
And I actively participate in calling other friends' cars by their names. My friend Dave's car was Lucky (lucky was sometimes a he and sometimes a she), Nikki's car is (Large) Marge (because she's an older car), Audrey's is Big Red, one of Daniel's was Mrs. Pierce.
My girlfriend and I call The Suburban Burbie. ♥