Yes many people are cock wombles, doubly so when they are behind the wheel of several tones of metal.
I recently had a near miss / road rage incident where a BMW driver was drifting in to my lane on dual carriage way in relatively slow moving traffic, no real space to move in to or need to move or probably intention just not concentrating as he was on his phone. I gave him a toot as the space he was drifting in to was occupied by my bonnet. His response was to hold down his horn and accelerate in to the lane I was in, in to the space in front of me (which was a sensible braking distance fortunately) while holding down his horn and proceeded to do an emergency stop.
He then got out of his car (still on his phone) and started raging so I gave him a smile and a wave and just as he lifted his foot to stamp on the front of my car I pointed at my dash cam and mouthed for him to smile for the camera.
He went a rather impressive Puce colour and retreated back to his car quite quickly and accelerated away quite quickly. I sent the footage to the Police, I believe he got a visit.