Falling asleep on the M5, early 82.
Woke up when half on the hard shoulder and half on the grass, milliseconds later the car hit the (sloping) start of the Armco and took off, things got bit hazy then but there was an almighty bang.....then only the sound of the wind as the car flew about 30ft (measured afterwards) came down again slightly skewed to the left front and started to somersault, this is where (I think) I was thrown out of the drivers window or even door and flew through the air to land on my front, feet facing down the bank, sliding downwards while watching the car continue somersaulting twice more before landing upside down in the concrete sided drainage ditch.
The back of the Mk3 Cortina estate had folded under itself, the roof was completely stove in and the front near side wheel was in the passenger footwell, right up to the seat.
I was heading down to Plymouth from Arbroath and had ALL my gear with me for leave then a transfer back to barracks so the back 'was' full!
That had been spread all over the bank and was mostly all around me.
2 drivers stopped, one had been following me sounding his horn, he said for about 3 miles, as he saw I was driving in a perfectly straight line and not following the road!!! The other was a removal truck, they had tea and blankets so I was able to negate the shock.
My injuries consisted of a wet sock (I had lost a shoe) and 6 thin parallel scratches across my back!
I had driven from Scotland down as far as the M6/M5 interchange then stopped for a kip at 02:00, woke up at 07:00, had a good breakfast then set off again, by 08:00 I was fast asleep!!
I consider myself very lucky indeed, if it had been a few months later ( when the seatbelt law came into effect) I would probably not be typing this now!