D T, if you really want to see the previous footage, I can upload it. This clip is the start of a segment and it saved having to join the clips together! But you won't see much anyway as nothing happened before. This happened at a merge in turn, and the van should have stayed behind the cam car, rather than unnecessarily bully their way past.
Illegal blast of the horn? Can you tell me which law states that using the horn is illegal?
And there's a difference between undertaking and getting in lane. Cam car moved into the left hand lane in order to take the next exit, and the traffic happened to be moving quicker in that lane. What do you expect the cam car to do? Sit and wait behind people in lane 1 on the motorway and impede the flow of that lane?
Conveniently edited to exlude history, unnecessarily long and illegal blast of the horn, then a series of undertakes. I agree, really poor driving standard.