It will use your phone’s GPS location and Wolfram’s flight path trajectory data to identify planes in your area. You’ll receive each flight’s speed, heading, and altitude (with a five-minute delay) from the Federal Aviation Commission‘s real-time trajectory data, as well as airplane type and slant distance, which is the exact angle between your iPhone and the plane. Finally, a sky map provides a visual overview.
Very cool, though I’m not sure I agree with his use-case. Are there other secret Siri features leveraging Wolfram’s databases?