This '6-car' set looks really, really good, but I would have preferred a single 'car' to duplicate / multiplicate plus a stand-alone doorway module. That said, there's a *nice* level of detail. The 3DS, FBX and OBJ+MTL meshes do not call external texture files, relying on traditional Kd, Ks etc. And they do that well. I found the OBJ supplied had no sub-objects as-is, hindering customisation. I used free Autodesk Toolbox to export the FBX as OBJ+MTL. This 'exploded' the model rig by a level, offers much more access at cost of significantly larger file. FWIW, the C4D is in current, proprietary format rather than the 'classic' open version.