These are a few renders of my Aston Martin DBS Model. The first ones are made with Blender Internal. The others with cycles. The last one is a try to see how well integration into an HDRI environment works. Didn’t turn out too well though.
It is indeed much easier to achieve a realistic result with cycles - feels almost a little bit like cheating ;).
Edit: got it moved to WIP, because its not really finished after all!