> "The final cut of "Cog" consists of two continuous sixty-second dolly shots taken from a technocrane, stitched together later in post-production [...] needed

> "The final cut of "Cog" consists of two continuous sixty-second dolly shots taken from a technocrane, stitched together later in post-production [...] needed only limited post-production work, as the decision had been made early on to eschew computer-generated imagery wherever possible. [...] Several sections also required minor video editing, such as re-centering the frame to stay closer to the action, removal of wires, highlighting a spray of water, and adjusting the pace for dramatic purposes" I have also seen the 'making of...' short film about 'Cog' and that, too, confirms that CG was not used to create the machine. All the interactions between the car parts are genuine physical interactions. I believe you're correct about post-production, though. It seems from the references in the Wiki article that the usual editing and manipulation took place, but none of that added any fake car parts or fake interactions.