The Motorola Atrix 4G does many things, including acting as a navigator, thanks to the smartphone's GPS and apps like Google Maps Navigation and AT&T Navigator. When using it on foot, it's fine to hold the phone your in hand, but if you plan on using it in the car, consider investing in the Vehicle Dock. The mount includes a cradle to hold the device and an adjustable arm that attaches to your windshield or dash. The accessory also features a USB port so you can charge your phone while driving, and it comes with an audio cable. The Vehicle Dock for the Motorola Atrix 4G costs $59.99.