Redshift Benchmark scene competition entry: The Tunnel

My entry into Redshift's benchmark scene competition. There was no main topic, but insted there were a bunch of technical restrictions (maximum 128mb of textures for example) and a heavy focus on optimising scenes render time. This one clocked at around 14 min on GTX 780Ti + GTX 580 in 1080p with 13 GI bounces. Winners will have their scenes featured in a free GPU benchmarking tool