One of the features I miss from my previous car is the credit card key I had with my Lexus. It allowed me to stick the key in my small wallet and just carry one item. Now with the Model S, I need to carry my wallet and the key fob. It might not sound like a big deal and I'm dealing with it, but it sure would be nice if Tesla offered a credit card key as an option, even it was a post-purchase option that you needed to purchase at a service center. I'm attaching a few pics of my previous credit card key for my Lexus. It didn't come with the factory car, I had to purchase it separately after and get it programmed at the dealer. I'm curious, is anybody else interested in having Tesla offer a credit card key? Please reply and hopefully Tesla will see this thread and see that there's a demand for it.