We used to have two white Accords so it was actually convenient to have names for them when talking about which one we were going to drive that day. They were Lily and Susan. I don't remember why we chose Lily, but Susan seemed like a fitting name for a reliable but somewhat plain car.
My motorcycle is called Delilah. Perfect for a sexy, black bike.
Our CX-7 is Julie, after Julie Andrews in the movie 'Mary Poppins'. She's our family car and has similar characteristics to Mary Poppins - she's hot, takes care of my kids, lots of fun.