Just like you can tilt the view to see where in 3D Space satellites are located in SpaceBook
Why not have a FlightBook site where you can do the same for aircraft? Granted it’s more data than satellites as airplanes don’t travel in predictable orbital paths, but even just tracking a few airplanes at a time would be swell. In https://flightaware.com/live/flight/random there’s no view tilting unfortunately, perhaps they could switch to Cesium to give users a full 3D view of the flight complete with terrain. Maybe the cloud cover could be rendered at the proper altitude as well to see if the plane is flying over, through, or under the clouds.
You can download KML network links from http://flightwise.com/flighttracking/ and open in the standalone version of Google Earth, but there’s no interpolation between the 30 to 60 second updates, plus it’s a slight hassle downloading files and opening them in another app. Seems that filghtaware has something similar http://flightaware.com/about/faq#googleEarth
Basically something like this video https://www.youtube.com/watch?v=UeM9MZiLqhY