I found the 3DS model after having downloaded a bit over 2 GB of cars I've found somewhere on the Internet. There is a huge sphere surrounding the scene. It has - as the ground plane - the default grey material applied with a few percent of transparency. The sphere's grey has been modified for an ever so slight green emphases. Lit by my WhiteSphere HDRI with 256 lights, intensity 5 and effekt 75 at linear falloff 25.