If you're not the sort of person who explicitly trusts GPS and mobile navigation, move on. For everyone else, Google's just flipped the switch on a cool little feature for Google Maps Navigation (which we're reminded yet again is still technically a beta product). Now, when you're driving and using a Google Maps Nav route and have traffic up ahead, the app will automatically route you around it. And you don't have to touch a thing. From the Google Mobile Blog:
You don’t have to do anything to be routed around traffic; just start Navigation like you normally would, either from the Navigation app or from within Google Maps. ... Starting today, our routing algorithms will also apply our knowledge of current and historical traffic to select the fastest route from those alternates. That means that Navigation will automatically guide you along the best route given the current traffic conditions.
Hey, whatever keeps us from having to ask for directions is a good thing.