Good news for us mass transit riders -- well, those of us in a couple of select US cities, at least. Google Maps is getting more live contextual info in New York, Salt Lake City and Washington DC. Riders will be able to check out live departure times for seven subway lines in the Big Apple and buses and trams in Utah's most populous city. Over in our our nation's capitol, Metrorail passengers will get access to alerts including unplanned delays and track work. Maps now has transit info for 800 cities in 25 countries, accessible through the company's Android and iOS apps.