Despite apps that let a few lucky Glass owners control their Nest thermostat or unlock that Tesla Model S, one of the futuristic headgear's most practical applications is still just the default turn-by-turn directions that come courtesy of Google. The R&D department over at Mercedes-Benz realizes that as well, but wants to take it a step further. According to a report in the Silicon Valley Business Journal, the automotive company is working on a Google Glass project that combines both pedestrian and automotive directions to take a user literally from door to door. MBRDNA President and CEO Johann Jungwirth told the publication that he wants Glass to seamlessly transition between walking and in-car navigation. Of course, not everyone has access to the pricey wearable just yet, so the project won't likely see real-world application any time soon. In the meantime, Mercedes does have a few more down-to-earth solutions for the gadgets you might already have.