I am not sure but by the sounds of what he has told me and posted on Pinside it is done in house but those models look like solidworks 3d models, here is mine of the cabinet with a older version of solidworks. The beauty of solidworks is that you can look all around from different views and set material types, the realistic look (better on the newer versions) and it even tells you the total weight of your project and where things are clashing / interfering when they shouldn't.
