Departure and arrival times for your frequently visited places.
http://appsforsepta.org
http://twitter.com/#!/search/%23Apps4SEPTA
http://setpa.org
A quick (changing) list of things I think are still undone (FE):
- Passing the initial location call to the (heroku) app
- getting zip or geo-location data from the user
- Creating the template to create DOM elements from the API results