The app now features extensive coverage of Metro, bus, tram, trolleys and ferry networks in 80 major cities worldwide, including US ones like Austin, Baltimore, Philadelphia and Sacramento. It allows you to schedule your city trip with the public transport, instead of a car. Eliminating the need for paper maps and timetables, it can show you the nearest public transport stations or stops around you, and calculate how to get to the desired destination with the Metro, bus, a combination of them plus some walking, and so on.
Nokia 900 appears on AT&T's shelves, adding to the free offline voice-guided navigation that will be on there. In fact, Nokia already demoed the City Lens and Transport apps on a Nokia Lumia 900 around the CES show last month.
downloading a precached map of the neighborhood to use for routes.