We have just completed testing of the Navigon Mobile Navigator North America for the iPhone 3G and 3GS. A full report will be posted soon, along with a review of the XRoad G-Map. (See our initial XRoad G-Map test drive.) … We will monitor this emerging segment, testing the major entries, including the TomTom app expected late this summer. See our previous report on cell-phone navigation. And learn about the upcoming TomTom iPhone app. —Jeff Bartlett and Frank Spinelli …