The Dark Knight Rises | Behind-The-Scenes Production designer Nathan Crowley and special effects coordinator Chris Corbould talk about using real-life military vehicles as inspiration and how they made the Bat fly. Nolan prefers to build practical machines rather than relying on visual effects for his films. The Tumbler, for instance—the prototype military vehicle that appears as the Batmobile in Nolan’s films­—was a real vehicle built from the ground up. Crowley started by sketching out the rou