I'm certainly not being a numpty here. (Elsewhere maybe, but not here

).
Let me ask you this col, imagine you are driving your car/bus whatever. Imagine some other road user, say a cyclist, takes a dislike to you, for no reason at all. How much provocation would it take for you to swing your vehicle at the cyclist?
I'll answer that for you, assuming you are a law abiding, decent bloke (a stretch, I know...

). You would under no circumstances swing your vehicle at the cyclist, because you realise that that would seriously threaten the life of the cyclist, possibly kill them.
So this is why I think provocation in this case is a red herring. Under no circumstances would any decent person swing a vehicle at a cyclist, knowing full well what the consequences would be. This 'driver' swung his taxi at the cyclist because he was a &^&%&^%$&. There is no logic in it.
Remember some people don't need provocation. Have a look at
this. This is the extended version of my angry man video which I have posted previously. I challenge anyone to find where I provoked him. All I asked was, after I thought I heard him toot at me, 'what's the problem?'. Some folk don't need provocation.