Two items of note from our friends at the Consumer Reports Cars Blog:

• TomTom to update, improve iPhone navigation app

TomTom has just announced improvements to their iPhone navigation app, some of which address shortcomings we have criticized in the past. The upgrade adds three key features routinely found on TomTom stand-alone navigation devices. More...

• Test Drive: Live traffic data on Navigon Mobile Navigator iPhone app

Navigon was the first major GPS maker to offer a downloadable iPhone navigation app, porting over its graphic interface and features to the popular cell phone. Today, the Navigon Mobile Navigator stands as the top-grossing application in the Apple iTunes store, though until this week it has lacked one key feature: traffic information. More...