Garmin Takes a New Tack With Linux-Based Nav Phone

Is there a market for a $300 proprietary Linux-based navigation device with phone capabilities? Garmin's Nuvifone will put that question to the test. Known for its navigators, Garmin might be following Palm's playbook by adding phone capabilities. Given the popularity of the iPhone, the advance of the Androids, Palm's struggle to push the Pre -- can the Nuvifone find a niche?