Rain induced road rage

I'm not going to bang on about the rain again today, well, not directly anyway.  But I am going to bang on about the effect the rain has on road users. For us bicycleists, the effects are well documented and experienced: you get wet, your brakes stop working, you cant see, white lines and tar banding become lethal etc.  As I've argued before, the rain, or rather standing water, can help too by showing up diesel spills and revealing the shitty patchwork state of the roads we walk, ride and drive on.
But I want to explore what happens to the average Carist when the heavens open because it seems to me that people's ability to operate an internal combustion  engine fixed to a chassis and transmission rig, diminishes massively in the wet.
Its obvious to anybody who drives a car that the way you drive in the wet is different to the way you drive in the dry - same as if you ride a bike or motorbike or scooter, drive a JCB, a bus, horse & trap or whatever.  While there is a range of ability to adapt to different road conditions, there is also a palpable change in the attitude of some Carists when it rains and its this that troubles me.

The simple explanation for this is that car drivers are just a bunch of [expletive deleted]s and they are more concerned with trying to get the lights, answer their mobiles or disagreeing with John Humphries' questioning on the Today programme to care about other road users like cyclists.  
The problem with simple explanations is that they are usually wrong.
So what does happen on the roads when it rains? First of all, you probably get more people using them which means there less space for the next enclosed bubble of glacier-melting inhumanity.  I have no figures to back this up, but there's bound to be a cohort of people who will  choose their car as they cant face walking to a bus stop or riding a bike cos of the rain.
Secondly, I think more difficult conditions magnify the abilities and, crucially, inabilities of drivers.  In effect the spectrum of ability becomes wider resulting in the fatal mixture of indecision and nervousness placed cheek and jowl with over-confidence and bravado. 
At the heart of why this matters lies the essence of why the motor car is an inappropriate method of transport in modern cities: impatience. 
While I'm fascinated by technology generally, including cars, I find the hubris of Carists unbearably disgusting and anti-human.  Your car might be able to reach 130mph and go from 0-60 in ten seconds but not on Northumberland Avenue in Old Trafford you cant, and especially not when there's a queue of eight other cars 150 metres ahead of you.
But this does not deter the impatient Carist, as the world caves in around them because a bus has pulled out, the lights have changed or woe betide, somebody wants to use a zebra crossing, impatience grows to dangerous levels.
You can tell I had a run in with a Carist this morning, can't you!
Ride safe