> btw, will the gui include an option to turn off the shadows and the fog?
Why?
Fog can already be disabled if you load an external shader file (see the latest update at the Supermodel site) and comment out the appropriate line in the shader file, near the end.
As for shadows, if you mean things like car and player shadows, these are just black, flat polygonal objects used to simulate shadows, and therefore are indistinguishable from other 3D objects as far as the renderer is concerned.
If you want lighting and shading disabled, that's easy enough to do by modifying the vertex and fragment shaders appropriately (both shaders can be loaded from external files, by the way) but I don't see the point of including such an option.