Gizmodo has a review of the Google Navigator for the Motorola Android phones. Here are some of their points:

On Android 2.0, on the Verizon Wireless Motorola Droid I’ve been testing, Google navigation is part of the Car Home suite, an easy-to-read, easy-to-reach set of apps including map, turn-by-turn navigation, voice search, text search and contacts. However, as you can probably guess from reading that lineup, the lines are so blurry it can get confusing fast. The sane place to start is voice search.

Still, if this was built in to the iPhone’s Google Maps, or offered as a free download at the App Store, damn would it steal customers like a mofo. You might still see the occasional sale of a Navigon or a CoPilot, because of particular necessary features and because of the onboard map databases (which people who go off-grid prefer), but really, this thing would—and probably will—swallow the GPS app market alive.

Because of that, I am hoping Google’s developers pay close attention to this review, too. The app is still in beta, but there’s a lot of user-interface work yet to be done. Google: If you’re going to knock everyone else off the mountain, at least give us an app worthy of a king.

Amazing voice recognition engine

Live traffic and alternate route planner

Text-to-speech

Good routing and fast re-routing

Satellite view and other views not always useful

Text search features are overlapping, confusing

Interface overall needs better flow

No POI category browsing or “go home” feature

No multi-stop trip planner