:: Emo
The references are great! I think I saw an older Version of this prototype... there was no interior in the one I saw -)

::Cyrius
I know bulletproof personally so this was nothing really interesting for the average -)
Anyway, the shader is pretty basic...
an simple grey color, the reflectivity-channel has an ramp with an samplerInfo, Eccentricity 0.041, Specular Roll off 1.2
I created an big sphere, made it not casting shadows, not primary visible only for reflectivity... and added an simple lambert shader with an image in the Incadenescence channel... that's all... great an ground just for receiving shadows and set the background color to grey, activate raytracing and you're finished...
for concept work this works... the finished rendering need's an better setup -)
-Klaus