This is ridiculous, I mean, wholly ridiculous. It never did any child any harm to have something that was a tiny bit above them anyway, and I claim that anyone who can follow Doctor Who can follow absolutely anything.
It was 100 feet of 16 mm black-and-white film of a car coming to a stop sign, and driving off. I had to decide how to frame and light it. It was magic. There was a sense of mystery.