My '87 I call "Red Stripe" - She looks like the beer bottle.
My old '91 2.3 I called "The Mootang" - Was so slow I had to make a cow reference.
My friend's '01 F-350, he calls it "Trigger" - Not really sure why.
I have never named my car, or even referred to it as a he/she lol. Its just, the "stang" or "Mustang", or when things don't go my way, its "You F**K**G Thing" or "Damn POS" lol
A personified vehicle is harder to sell or push off a cliff. Any horse name, like Old Paint, seems appropriate. Its also better than calling it swear words when there is a problem.