Tony,
Its really down to whether the car (rather than the owner) has soul, whether or not it qualifies for a name!
You have caused me to audit... In my 35 years of car ownership, I have owned 15 cars, of which 4 have had soul, so therefore qualified for a name. (All have been female.)
Whether a car has soul, is of course very subjective!
Regards,
Andrew
Claret Red Plus 4 called Rosie