Google is definitely putting some solid work into its Mobile mapping application these days. We have a feeling it will eventually come to a point where Google makes paid navigation services obsolete (especially subscription services such as Nokia Maps) and it will likely be sooner rather than later. We can’t imagine a better native navigation candidate for Android, can you? In the meantime, new features continue to roll out at a surprising pace and the application seemingly becomes more comprehensive each day. Our last post covered Google’s voice search pilot available on certain BlackBerry devices and now Google has introduced mass transit directions on its S60 and Windows Mobile versions of Google Maps. Released yesterday, version 2.2 can be downloaded and installed by pointing your mobile browser to google.com/gmm. The version provides access to transit directions in over 50 cities around the world and surely more will follow. The usefulness of this new functionality is fairly obvious, especially for those who travel often. Mass transit had already been incorporated into the BlackBerry and Java versions of Google Maps so now we get to sit back, relax and wait to see what the mobile Maps team comes up with next.