Notorious TechCrunch had a breaking story, announcing Google Maps Navigation For Android 2.0 as the "absolute killer app".
Arrington notes the features and mixes up pro and cons. 
I am undecided if he's sure on where to put what.
The "connectedness" is a prerequisite for receiving map tiles. So please don't drive too fast and stay in areas with 3G coverage (and few other data hungry users). Otherwise you won't get much assistance with connected navigation. Exaggerated? Try yourself and drive any highway, anywhere: mobile data simply doesn't come in as fast as you wanted to have it. Result: nice positioning icon on the small screen - zero map around, below zero satisfaction.
USA only, isn’t it?
However, there's mentionable back pedaling after the scoop. No, this is by far not the end of PNAv and PND makers, TomTom is not out of business, Garmin will pursue as most other players also will.
Think again.
Nevertheless, the app seems to be smartly engineered.
Despite this rather shallow criticism Google (again) intrudes into an industry giving many veterans a headache. Good timing. This must have been planned at least 3 cycles before - around beginning of 2009.
Hey - it's buget time in the U.S., Excel-sabbat ... everyone struggling for 2010 funds ... couldn't you have waited until this is over, Google ;.) ?
Wind back: No, Navigation For Android 2.0 is a gamechanger and it is a tornado - just define the teacup.
