This environment was a collaboration effort between myself and Josh Marlow (FX work by the great Tim Elek). The 'Reflections Demo' was intended to showcase how to properly use reflection captures, at the time a relatively new feature in Unreal Engine 4.
You can see more of Tim's work on his blog: http://derelict-compendium.blogspot.com/?m=1
Unreal Engine 4 - Reflections Subway Demo