Google Mobile App has been updated to feature voice activated search along with the introduction of location based search for BlackBerry smartphones although the BlackBerry Storm is not supported at this time.
The guys over at CrackBerry have tested out Google Mobile App with the new features and they say it works great while the voice recognition for searches is fairly spot on.
Furthermore, non-GPS enabled location searches also works well due to utilising triangulation and even if not one hundred percent on your location it still hit the area around the user which is really all that matters.