Kaleidoscope capturing the trains

What about somehow mirroring in the passing trains into the gallery space and creating a spatial kaleidoscopic piece of architecture?

I will develop this sketch later, but feel free to do it yourself as well.

This could be done either live with mirrors (through the windows? - magnus comment. I agree), or with videorecordings (with delays?) or a combination of those. The same principle could be used for sounds (echo?)...

http://www.ikea.com/gb/en/catalog/products/15302600

My trigger in this is to "frame" (and also exploding the frame through the kaleidoscope, and the mirrors maybe also has to leave the gallery and enter the street on the other side of the building) view on the city and its infrastructure as an ecosystem, which has its cycles and rythms of it's own.

Reference video (never mind the title) and further reading (swedish)

Caspar David Friedrich - Wanderer above the Sea of Fog (1818)