Will Google Maps Navigation kill sat navs?

Google Maps Navigation has been released as a beta for Android phone users in the UK and Ireland.
The application combines turn-by-turn navigation with Google Maps, along with voice search, satellite views, Street View, live traffic data and a special mode for when the handset is placed in a car dock.
Google Maps Navigation was initially only available for Android 2.0 devices when it was first unveiled in October, and a version for Android 1.6 handsets was released a month later in the US.
Could this mean the end for dedicated satellite navigation devices? Have your say below.

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