That old demo was built with Quest3d months ago. http://rtshaders.deviantart.com/art/BMW-Z4-Demo-Download-141635876
I am revamping it into Esperient Creator now.Some of unique technique are applied into realtime 3d visualization.It mainly contains Advanced Dynamic Skylight Rendering with semi-automatic Global Illumination(Cubemap IBL+Baked AO+ShadowMap) and realtime reflection/refraction etc.
Screengrab:
Kong Foong Ching:3d Model artist who is responsible for models and textures in 3dsmax.
Personal website:http://kong.co.nr/
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HD video:
http://exposureroom.com/members/RTshaders/c86a742d901847b5abc10d64466c4349/