Assuming you got the buzz around Google Maps Navigation in the U.S. and consequently conventional PNAVs have been touted dead - or at least almost dead - here's just another perspective. GNav might swap over to Europe in 2Q10, earlier or later ... doesn't make a difference as a fully connected solution isn't a solution than rather a problem.
Though its features are impressive, breathtaking, (add your adjectives) ... it'll become a huge problem space - for both mobile carriers, end users and Google trying to offer a satisfying experience.
Mobile carriers want us to use mobile data but can't come up with demand: a 3G signal might be there but as too many users roam into the same UMTS cell, making everyone's share of the bandwidth smaller - resulting in insufficient bandwidth for data-hungry connected navigation solutions. Carriers can't seriously be interested in beefing up their networks as data prices drop faster than bandwidth grows. Ask any carrier rep for the realistic bandwidth available within moving vehicles ... here you go.
- End Users within cars moving that are relying on their fancy iPhones and Androids become crabby as fully connected apps might well give them directions - but bandwidth is too limited to stream map tiles.
- Google hence inevitably will offer an end-user product that is beyond their own standards of delivering a seamless user experience. Though it's free, fat and impressive - it likely won't solve the use case it was designed for: taking you safely from here to there.
- Cost. Although the EU introduced a wholesale cap of €1 per megabyte downloaded - this quickly is eaten up by the amount of streaming map data consumed by connected devices within cars crossing European borders. Even if rendered to the smallest possible extend, the weight of many lightweight map tiles add up quickly. Consumers travelling outside their home networks will use a connected Android only once. And they will regret doing so after recovering from the exorbitant data roaming bill a month later. And this likely won't change too soon as mobile carriers love that little backdoor into our pockets. So the cost of a free product is high - for both the end user and Google.
There is some inherent logic why Nokia/Ovi, TomTom, Navigon and the usual suspects do only render frugal vector maps on their devices. The collateral won't change too soon: abundant bandwidth, cheap like water.