Make a docking cradle where you can dock your Iphone/Smartphone in your vehicle and it allows you to use the sync system to listen to you music, place calls, and all that other stuff, and make it so the Iphone/Smartphone becomes a useful monitor for the vehicles that don't don't have the in dash nav unit. The text scrolling displays are very inconvenient and not user friendly at all. If anything there should be something between Apple and Microsoft and Android to allow for their products to correspond. Winamp manages to pull it off..