Now this is a very cool feature, and I'm surprised this is the first anyone has mentioned it. Source Link--Computerworld
The new command is called "Lift for Moto Voice." Unlike the other gesture commands, it's turned off by default.
Once you activate it, you gain a new and more discrete way to use Motorola's expanded Android voice command system: In addition to being able to say your launch phrase aloud anytime the phone is within earshot to activate the system and interact with it via the phone's speaker, you can move the phone from your waist to your ear to speak commands and get responses directly through the earpiece -- so only you will hear them.