Superfly is a conceptual iPhone app that allows users to find nearby transportation options. It uses the phone's location services to locate the nearest buses, subways, taxis, and displays them for the user. The user can set preferences like regular destinations to prioritize results. It also has a "Ping" feature that alerts nearby taxis if the user needs a ride, preferentially notifying those going in the user's destination direction. The core screens display lists of transportation options sorted by arrival time and allow getting more results.