I was having a discussion today on how slick the Tesla key fobs are, and potential new feature of Bluetooth pinging to prevent the loss of keys, new fob syncing for profiles, etc. A question came up - any idea if one key can be paired to multiple Tesla cars? For example if I had a MS and a M3, that's 4 fobs. Switching them may lead to hunting through undescript keys, whereas I currently keep my MS key in my jacket pocket and it pretty much stays there permantly. Are there any instructions on programming a key fob to the car?