I only ever named one car, which was a white Ford Escort that my mom basically got for me to drive after college. When I asked my mom why she picked a WHITE car (I hated the color), she said that it was a "pure" color, which apparently was meant to match my virginal status at the time!
Of course, after hearing this, a friend of mine said promptly, "Did you tell your mom that white gets dirty fast?"
Anyway, its name quickly became "The Virgin Ride."