The flow usually heads in the opposite direction with cell phones transforming into Swiss Army knives, but today we’re going to head a little upstream. The TomTom Go 715 is being touted as an all-in-one GPS unit, but it’s got a little something extra that other GPSers are lacking: cell phone functionality. When you plunk your SIM card into the Go 715, it essentially transmogrifies itself into a cell phone. Not only can you make and receive phone calls, but it’s perfectly capable of handling SMS text messages too.

The built-in Bluetooth lets you do it all in a handsfree kind of way too. TomTom hasn’t said anything specifically about this device yet (the news comes via the FCC filing), but we hope to find out more at CeBit.