This is the adorned BMW M3 E46 loved by automotive fans worldwide.
The model was created in Blender 2.68 and rendered entirely in Cycles with a bit of compositing at the end.
The .blend file has 5 studio environments provided separated into separate scene layers and render layers.
For your convenience a simple render layer has been provided that will render all selected scene layers.
More renders of this model can be found here: http://andreimaximov.carbonmade.com/
Hope you enjoy the model!