I created the poly model for this truck a few months ago and finally got around to creating a render of it. The truck is modeled in Maya to be as real world accurate as possible using tons of photo reference. For the render I used Mental Ray with a linear workflow and the mia architectural materials with the physical sun and sky to get all my render passes. Once all the renders were complete, I composited everything in photoshop to get the final image. Please check out my website www.gurmukhbhasin.com to view some step by step images for the making of this render.