I have never seen a voice recognition in a car that has worked good. I hate the TCH voice recognition, I find myself spending more time doing the command than it would take to just grab the phone and do it. My dad has a number of GM vehicles with the onstar, and I keep making fun of him when he tries to dial by voice.

Him "Dial home"

Car "Photon torpedos armed"

Him (in a stern voice) "Dial home"

Car "nuclear reactor on"

Him (yelling now) "Dial Home"

Car "Deathstar activated"

Voice reconition does nothing more than aggrivate the user.