Thus, a little more than a year after Apple added GPS hardware to the iPhone 3G, we have Navigon’s MobileNavigator North America (introductory price $70, $100 thereafter), the latest in a string of third-party applications that are attempting to offer pricey alternatives to just hitting the “next” button on the iPhone’s Maps application. What Navigon brings to the table is “the latest map material from the market leader…
