I like the eerie quality this has.
Created using motion blur in Blender. Although it may appear so, there was no 3D geometry, the shape is actually being created using a flat wireframe outline that’s moving back and forward very fast (once a frame) which, thanks to the motion blur, creates the “solid” looking geometry.
Cool effect. I may try this some time.
Cheers mate, here’s another version with Suzanne included, i like the primitive look of this, like some late 60’s university experiment!
In another context, you could go for a “Drunk with Neon lights” effect 
Do it man!
AKA Long Exposure photo, Light Painting… you can also throw displacement into the mix generating NPR look 
and technically it’s not ‘geo’, but another method of generating specific CGI illusions… well unless you consider math - dimensions movement and acceleration… http://milesmathis.com/pi2.html
There were no long exposures, each exposure was a 24th of a second. And i’d question if anything in CGI is “technically” geometry, isn’t it all an illusion? If you see geometry, it’s as real as any other geometry you can see on a flat screen.