The Triple Decker Train is the 2nd level in Stacking.
Lee Petty was the project lead and also our art director / concept artist. The environment modeling work was split between myself and Freddie Lee, and Kristen Russell was our material artist. We had a very tight production schedule for Stacking, I think we spend a month taking a whole level from greybox to final.
Lee would give us pretty loose concepts like these:
In Stacking we baked the lighting information into the vertices (environment has no shadow casting at all).
Some more work from the Zeppelin level.
