We have a new showcase up on our demos page.
HTML Telemetry overlay visualizes the telemetry data in GoPro videos of paragliding flights:
https://cesiumjs.org/demos/HTMLTelemetryOverlay/
We also have more details of an interview with Lu Wang about experience developing the app up on our blog:
https://cesium.com/blog/2018/06/18/html-telemetry-overlay-demo/