Thanks to Tom over at WinRumors for the heads up on this new commercial that features an airport traveller, the Windows Phone 7, Bing and voice search.

I have used the voice recognition on my LG Quantum several times in my vehicle and it works very well.  I have even had the radio on in the background and used voice to start a phone call and it identifies the individual in my address book without any problem and no prior setup to attach a voice command to the entry.

Searches in Bing work without issue as well. 

Windows Phone 7 Tip: Press and hold the Windows Key on your phone to activate voice recognition to make a phone call.