Apple has went crazy in redesigning their maps application. It has turn-by-turn navigation, Traffic service, Anonymous real-time crowd sourcing of this data via iOS users. All of this works from the lock screen. This also works with Siri. You can ask Siri “Where can I get gas”, and Siri will look for a gas station. Apple has been flying over cities to build 3D photographic models! It’s all rendered in real time.
Turn By Turn Directions:
Apple has really out done mapping in iOS 6.
A few Pictures: