For one day only, Amazon is selling the Dash Express Two-Way Internet-Connected Portable GPS Navigator for just $199.99 shipped, originally priced at $299.99. The company “knows how fast every road segment you drive historically moves during each of 672 separate 15-minute time periods during the week.” Product page. Video after the break.

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.

[via Amazon]