Pixyz is a plugin for Unity that can process sets of CAD data in many different formats.
For me, this plugin gave me an opportunity to go find some CAD models to serve as mechanical props for scenes in Unity.
Applications for large-scale CAD (machinery)could be practical for BIM (business information modeling) environments.
I actually managed to build up quite a collection of parts!
...some triangle counts were noticeably high
From Maya, I also took this opportunity to take orthographic renders to generate stamps for normal maps.
I made individual render-decals that I composited and put into this one photo - below.
Most of the views you'll see are from the standalone part of the plugin but each part can be taken directly into Unity after some processing.