TomTom has TomTom U.S.A (iTunes Link) in the iTunes App Store for $39.99 for a limited time. This deal also entitles you to a FREE update to the new version as soon as its available!

The TomTom app turns your iPhone into a full on TomTom GPS unit. It comes with US Maps and features spoken city and street names, advanced lane guidance, TomTom IQ Routes Technology, music controls, full contacts interaction, background navigation, local search provided by Google, a large point of interest database, and much more. iPhone 2G and iPod Touches requires a separate hardware add-on.

TomTom also has the TomTom U.S. & Canada (iTunes Link) in the iTunes App Store for $49.99 for a limited time. This app includes both US and Canada maps and is also entitled for a FREE update when it makes it into the iTunes App Store.