I wouldn't be too happy being driven by someone who fails to take basic observations (such as noticing that a bus has stopped at a zebra crossing) and who displays a cavalier attitude towards road traffic law (by overtaking at speed on the zig-zag lines approaching a zebra crossing when a huge bus is blocking the view of a large part of the crossing). If the ambulance had run and killed over the deaf bloke, who was in the process of using the zebra crossing, a charge of causing death by dangerous driving may well have been proven on the basis of the video evidence you present here. I sincerely hope you will bring this incident to the attention of your manager with the objective of forcing your colleague onto a driver improvement programme before he really does kill someone.