Picking a GPS: Top Features

By Marc Saltzman
November 6th, 2008

Millions of road warriors have finally traded the folded gas station map in the glove compartment for a handy global positioning system (GPS) unit.

You know, those small doohickeys that communicate with satellites hovering above the Earth to pinpoint your location on the planet. With built-in maps for the entire U.S. (and usually, most of North America), GPS navigation units can help you reach to your destination with turn-by-turn visual and audio instructions.

But you already know all this. You’re also aware that GPS units offer millions of relevant “points of interest” (POIs), such as restaurants, gas stations, hotels, bank machines and tourist attractions. You also know that if you get lost, a GPS device will recalculate how to get back on track.

What you probably didn’t know, however, is all the impressive new features ...

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