Voice-activated GPS: Just like talking to KITT

CNET looks at three GPS devices that accept voice commands.

Magellan Maestro 4250
Magellan's Maestro 4250 accepts voice commands. CNET Networks

One of the benefits of portable navigation systems is voice-guided directions, and if you've got an in-car GPS that has text-to-speech functionality, even better. Continuing along those lines, there's a new technology that's just starting to show up in devices now: voice commands. With this capability, you can perform certain tasks with the sound of your voice. Since this is an emerging trend, there are just a handful of units with this feature, including these three from top manufacturers TomTom, Magellan, and Garmin.

Click here to see GPS devices with voice commands.

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