TomTom introduced its navigation software in combination with a specially designed car kit on the iPhone.The iPhone app will have IQ Routes and comes with the latest maps from Tele Atlas.
Tomtom also brings a nitty car kit for the iPhone to securely attach it to the windscreen or dashboard. This also helps the GPS performance needed for the navigation software.

The TomTom navigation application for iPhone will be available via the Apple iTunes App Store, following the release of Apple’s OS 3.0 operating system. Details regarding pricing and availability for both the application and the TomTom car kit for iPhone will be made available in advance of the products’ launch later this summer.

Source: tomtom