The MODL asset refers to a RenderWare DFF. It is a model that can be instanced in the world by many other assets.
The model's textures are loaded from RWTX assets and referred to by a hash code and not the texture's actual name; see the RWTX page for information on this.
rwio Plugin for 3ds Max
These are the settings that should be in the plugin's exporter for it to work ingame (note: it is possible that other settings also work, depending on your model's needs):