Hi. I'm new here and recently bought a gently used 2006 Infiniti G35X. It's got so many bells and whistles, it intimidates me at times. Going through the car and manual and find this thing called a "card holder" over the side window on the driver's side. For the love of me, I can't figure out what kind of card this is supposed to be for. But the manual says the card holder shouldn't be used while driving. Can anybody tell this novice Infiniti owner what this "card holder" is supposed to be for????

