1990 Nissan 240SX Fastback - まい / Mai - "Dance"
2003 Nissan Sentra SE-R Spec V - なつみ / Natsumi - "Summer"
1994 Mazda MX-5 Miata - しあ / Sia - "Bringer of Joy"
2004 Mazdaspeed MX-5 Miata - ほたる / Hotaru - "Firefly"
2007 Toyota Yaris Liftback - ひかり / Hikari - "Light"
1975 Datsun 280Z - もとこ / Motoko - "Origin"

I've always named my cars. Not sure why.