The Mobile Media NAV420 SIRIUS-Ready Portable Navigation System by Directed Electronics is a GPS, a media player and a SIRIUS capable device all in one.

First and foremost the Mobile Media NAV420 is a Portable Navigation System that sports all the latest database and technologies. The 20GB hard drive turns it into a capable personal media player. But wait, there's more. You can also snap it into the optional SIRIUS cradle to access your favorite satellite radio programming. So you'll never get lost, or miss the hum of the Sybian, ever again.

No clue on pricing and availablity, but it will be on display at CES.

[Mobile Whack]