You may have seen the Viliv S5 navigation demo from the guys over at Streetdeck recently; now it’s the Viliv X70′s turn. The X70 [Portal page] is larger than the S5 [Portal page], and has integrated GPS as well as 3G data. That means that everything needed to run the great looking Streetdeck software is already under the hood. With the car kit that Viliv has made for the X70 and the Streetdeck software, it looks like the X70 could work wonders as a navigation device. The power of using a full fledged PC as your navigation unit really shows over that of a simple dedicated GPS device. As you watch the demo below, take a look at the map as Chuck drives the car around. You can practically watch the map turn in real time as the car turns. Most of us using dedicated GPS devices are probably used to seeing the screen update every one or two seconds. With the X70′s relatively huge screen, you can bet that it will be easy to operate the Streetdeck interface and see all of the necessary navigational information. Take a look at the video below, the first few mins are a short overview of the device and car kit; the in-car demo starts at 6:30.