Dash Express is the first two-way Internet-connected GPS navigation system. Dash Express delivers traffic and destination information in exciting new ways, and offers a wide range of new capabilities available from the car that makes a typical GPS practically obsolete. Dash Express is the smartest way to get from A to B, and find everything in between.

Here some of Dash Express advantage:

The Dash approaches traffic in an entirely different way

Dash approaches traffic in an entirely different way ? by collecting it from other people driving real commute routes, during real commute times. Each Dash Express anonymously and automatically sends its position and speed back to servers at the Dash Network Operations Center. The Dash servers then update all other Dash devices in the area with current road speeds. That way, members of the Network always have the best, most up-to-date traffic available.

Dash always have fresh data

No matter where you?re headed, with Dash you’ll always be able to find exactly what you need, because Dash connects you to the vast and always-updating Internet. A typical GPS device only accesses a canned database of information that stopped being current the moment it was pre-installed at the factory.

Using Dash, you can connect to Yahoo! Local search and find unlimited, up-to-date information all in real-time, and rated by real users. Yahoo! community ratings make sure where you?re headed is really somewhere you want to go.

With a touch of a button, you can find everything from the cheapest gas station to the latest concerts, the best restaurants, the closest yoga studios, dog-friendly parks or even nearby apartments for rent

Dash have frequently updates and auto updates

With the exclusive AutoUpdate feature, the Dash Service updates and improves your device without requiring you to connect to your computer or take it back to the dealer. Dash updates software, maps, and historical traffic information seamlessly.

In addition, Dash frequently updates each Dash device with the most comprehensive historical traffic database in the industry ? a combination of third party and Dash driver data. Dash knows how fast every road segment you drive historically moves during each of 672 separate 15-minute time periods during the week.

Dash presents up to three different routes

Most portable GPS devices offer only a single route to your destination. Dash presents up to three different routes, provides the distance to your destination, and uses real traffic information to calculate travel times for each route. Even after you?ve selected a route, Dash automatically alerts you if traffic conditions change significantly.

Dash have Two-way Connectivity

Dash Express wirelessly connects to the Dash Service using both cellular GPRS and Wi-Fi radios. For cellular, Dash uses a GPRS network composed of multiple carriers, so the coverage range is larger than any single national carrier

Theft Resistant

The unique “theft-deterrent” feature can remotely disable your Dash device instantly, removing your personal data, shutting the device down, and making it a worthless target to would-be thieves.

For the complete feature you can go to the amazon store.