Why you still need a dedicated GPS navigation device

In an effort to keep the portable GPS device category alive, Garmin packs a lot of features into its new DriveAssist 51. But only one is likely to resonate with most drivers.
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James A. Martin is a seasoned tech journalist and blogger based in San Francisco and winner of the 2014 ASBPE National Gold award for his CIO.com blog. He writes CIO.com's Living the Tech Life blog and is also a content marketing consultant.