No offense to the makers of a NYC Subway App (that informs commuters of the train schedule) however, this is a classic example of how (in many areas) America is woefully lagging behind. Granted, a lot of this is largely attributable to the nation being a ‘car-culture’ yet, in Tokyo (for example) where Public Transportation is a part of the majority of the population’s lifestyle this story would be very old news (e.g., said apps have been widely available / utilized for quite some time now!)
(Source) WSJ: http://goo.gl/xbaQG