The new Magellan RoadMate App transforms an iPhone into a full-featured GPS navigator with turn-by-turn voice guidance and spoken street names.

ENGADGET: Magellan's iOS RoadMate GPS application gains free lifetime maps, Google local search

When the car is put into reverse, the GPS navigator will switch from map to rear-view mode, enabling drivers to view what is below the rear window.

ENGADGET: Wireless Back-Up Camera for the Magellan RoadMate checks your six

Nokia also debuted two in-car navigation devices this year and a GPS accessory that turns any Bluetooth phone into a personal navigator.

FORBES: Nokia Redraws The Map