Google has just added an interesting new feature to Google Maps Navigation. Now, you can utilize real-time traffic re-routing to get you out of those nasty traffic jams on the way to/from work. At the moment, it is still in beta, and only in North America and Europe, but reports indicate it is very promising and works very reliably already. Of course, Google Maps already had traffic info for some time now, and this seems to be an excellent 'evolution' of the functionality. The technology utilizes a combination of multiple sources, and take into account both current and historical information about your route in order to plot new routes for you.
You can get the update today and let us know how well it works in the forums.
Source: Android.net via Engadget and Google Mobile Blog