Do you guys recommend getting the car kit mounting bracket for iphone 4 for in-car use and hands-free? I don't take phone calls in the car (in fact no ones calls me ) but, for GPS, I just reply on voice guidance, my iphone is in leather pouch. Would an car kit be better ? and what would be the norm ? charging while driving or not? Also, i've seen a separate TomTom car kit app but no idea what this one is for..