Show HN: Visualization of all bus routes stacking up in the air, in 3D

OP here. I've posted a bunch of photos/videos on Twitter: https://twitter.com/cheeaun/status/1010542298810085376

Basically my goal is to render all bus routes on a map. But unlike train routes, they overlap wayyy too much. Instead of limiting the space to X & Y, I thought why not go Z index (up).

Data from Land Transport Authority of Singapore. Map is powered by Mapbox GL JS.