As part of a Rebranding job for CYP, we decided to put an ad on the Dave channel. I developed and scripted the ad, and created the tunnel sequence. I had arranged for the shoot to take place in a Bang and Olafson boutique shop. The production company I hired, unfortunately, let me down upon returning to their offices I received a call saying they had lost all the footage from the shoot! No explanation why but a promise to fix it. This is why the beginning section is in CGI, their version of fixing it, AHermmm!
Due to other commitments for the client, I could not be onsite during the shoot, only turning up for the set-up and the de-rig. A valuable lesson learned, NEVER leave a shoot without checking the footage even if someone else is producing.