Search by voice and transit directions comes to Google Maps with a whole host of new features.
You can now search Google Maps for Android using your voice, making it easier than ever to look up places while on the go. Just speak your query and Google Maps will find it. The voice recognition engine currently understands English in American, Australian, and British accents. After you search, you will see a map of places. To help you decide where to go, business listings includes content such as store hours, prices, ratings, and reviews.
See Official Google Mobile Blog: Search by voice whatever your accent for more details.