I really like the rustic leather version. I have the earlier um, city version ;-)
Bothers me though that the car drawing is reversed from the way the fob best goes into the pocket.
Truth be told though, even though the car shape fob is kinda cool, the whole fob concept is a little annoying if it means the fobs are that large. I'd love to see the fob be much smaller, like stick of trident small, and flat as a credit card. I'd gladly lose the car likeness for that. Be happy for it to be securely put on a personal device too, like a watch or tied to phone, so long as it is implemented to use local networking, whether rfid, NFC, whatever - no dependency on a cell network, etc.