I thought it was that he altered planning documents and even went and moved physical markings to make the M25 the shape of the ancient evil sigril Odegra (this is from memory; I just read it a lot as a teenager) so every angry drive round it powers that sigil.
Yes, I think you’re right. And if I recall correctly, near the end he’s trying to get somewhere but gets stuck in traffic by the same problem he caused.
Whoever decided adding silly audio effects to an operating system is surely one of these lesser devils. Just think of how many people have been aggravated by a colleague's laptop when it "wakes up" every day, or an inappropriate notification sound during a presentation or something. On any desktop PC I interact with I do my bit by disabling all sound effects before I continue.