Mio, the company that brought us the DigiWalker, is showing off a concept phone/navigator here that could finally convince people to carry around GPS navigators. It's a dual sided cell phone and personal navigation system. The cell phone side has a shiny, mirrored finish, while the GPS side has a large, simple touch screen

Mio has yet to negotiate a deal with one (or many) of the U.S. cell phone companies, so there's no word on pricing or availability. But when the device does hit stores it's sure to put the iPhone's Google map function to shame.