Google Maps Navigation in Australia and New Zealand is now avaialbe and provides voice-guided turn by turn directions in real time. That means that instead of printing out your directions in advance, or having your co-pilot read aloud from list of directions, you can use your Android smartphone to guide you there directly.
Maps Navigation is available for smartphones running Android 1.6. To try it out, go to Android Market and download Google Maps.
If you've already taken advantage of driving directions in Maps for Mobile. Maps Navigation builds on that by combining the best of Maps for mobile, Google Search, and a host of unique capabilities only available on smartphones, like GPS, compass, text-to-speech technology, a permanent Internet connection, and the ability to search by voice.
Also, announced "walking navigation" to help you explore your destination on foot. Your phone will vibrate when you need to make a turn. You can even turn off voice guidance and just use these notifications while soaking in the sights and sounds around you. Use it like a virtual compass with satellite imagery to look ahead or to help pick out landmarks along the way.