With Moto X, Google Enters A Crowded Marketplace - NYTimes.com

A big Google bet

"But what executives hope makes the Moto X stand out is its voice command capabilities — like continually listening for a user’s voice and quickly reacting to commands. Saying “O.K. Google, now find me my way home” will quickly pull up a Google map with directions to a user’s house, for example. The phone learns the voice of its owner and responds only to it. Some people might find this creepy, but it is a feature that a user must turn on voluntarily.
Google executives have long talked about building computers that are so integrated into our space that we can ask them to do things without lifting a finger. The Moto X is a big step in that direction."

With Moto X, Google Enters A Crowded Marketplace - NYTimes.com