Last week, I discovered that real-time aircraft flight data is available through an open API. Two, in fact. Already having a city, I decided show overflights. I put in a five-minute delay to permit me to smooth the data but this is almost real-time.
Video shows FedeX coming into SFO over San Francisco. This is not very zoomy but it feels signficant. I am not entirely sure what to do with it.
http://www.brianbutton.com/babylon/MonoPlane.mp4
Airplane model was built out of cardboard, dowels, plywood and rubber bands. https://www.babylonjs-playground.com/#H3Z6J1#7