We all know the value of in-car navigation systems, but a true door-to-door system doesn’t quite exist yet. Mercedes-benz are working with Google on developing Google Glass to continue your turn-by-turn navigation after you park your car. Google already offers walking directions via Google Maps, but the Mercedes app would seamlessly switch between Glass and your vehicle, meaning that directions wouldn’t stop or need to be reset upon exiting the car. The end goal is to have this app available to the public for Glass’s 2014 launch.