Why buy an in-car navigation system? Your cell phone may have everything you need. Better yet, you pay only when you use it and it updates itself automatically.
By Bill Machrone
Forget that GPS device you've been lusting after. You may already own it—or at least the GPS capability, complete with voice-prompted driving directions, local eateries and attractions, even gas prices. If you have a GPS-capable cell phone, you can download or simply activate software that will give you all of the capabilities of in-car systems, and more.
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