I am hoping someone can give me some assistance on a possible purchase. I am looking to purchase a Belkin FM Transmitter. The item I am looking to buy is listed below, http://www.bestbuy.com/site/griffin-...&skuId=1909017 My questions are: 1. When the battery is charged and plugged in, is the iPhone battery draining and then charging as I go or is the iPhone staying fully charged while working? 2. Does anyone know if the music/podcast player will stop when I turn of the car, or do I have to stop the player manually? Thanks in advance.