Re: drivers not realising how fast cyclists are moving.
My commute to work in Cornwall included a main road descent where I regularly exceeded 30mph. There was a minor road on the left where buses joined the main road, turning right. If you were driving a bus and you saw a cyclist coming down that hill, you'd think you had time to get out. As both bus driver and cyclist, I could see it from both perspectives, and I remember a colleague saying once, "I saw a bike coming down, and was about to pull out. Then I realised it was Louise, and I didn't."
I suspect my own crash a few weeks ago was due to the driver misjudging my speed, although I don't know what he said to the police afterwards.
I don't really know what my point is here. It certainly is not that we should start riding slowly because it's what drivers expect. Maybe we need to be more aware that drivers will - not might - do stupid things because they don't realise how fast we're going.
That said, I don't think I would have got out of that situation any better than the cyclist in the clip did. If I couldn't stop before I went in the back of her, I would have tried to avoid her by going down the left, where she appeared to have left space for me, exactly as he did.