Since my CB360 called Ethel Honda in 1976 I haven't named any of my vehicles.
There is no romance in my soul I guess.
My first Mini was a red L reg Mini Clubman called Ethel as in Ethel Red (the unready, as it wasn't a totally reliable starter.....
My RD125 was called Yellow Peril, my KH250 was called smelly Nellie, the RD350LC was (naturally) Elsie, whilst my Ducati was called Desmorelda.
I've also had a Peugeot 504 pickup that was called Lester Pickup, and

always referred to my TVR as "The tart trap"
My 4/4 was called Pandy, after my beloved, beautiful and much missed flat-coated retriever.