Running into a car door some kind chap opened for me.  Woke up in ICU 24 hours and a 40 mile ambulance trip later with fractured skull and sub-dural haematoma.  Due to low pulse - my resting pulse is normally 47 ish - they thought I was nearly terminal.  I left hospital after a week or so, allegedly ok but I had suffered some cognitive impairment of which I was unaware and which meant my concentration was not as focussed as it should have been.  Result was another accident in which I broke my spine in 3 places, 2 neck 1 back and spent a few months in hospital this time.  Not long after discharge I had neuro-psychological tests that identified the damage in the first collision and resulted in a very substantial damages award.
 
 Now aware that I have to concentrate a bit harder, I have completed numerous cycle rides, including the raid Pyrenean a couple of times, with no further mishaps.  Before the 1st accident I had a virtually incident-free cycling career over 25 years.