When I was 10 my dad was driving the family home along the motorway after a weekend at our caravan.
An elderly lady was waving a white hankie next to her car that was pulled over on the hard shoulder (this was before mobile phones).
My dad stopped our car and walked back to see what the problem was. The lady's husband had chest pains and a pain in his left arm. My parents suspected he was having a heart attack (they knew the symptoms as my dad had had a couple by that stage).
My mum wanted to try and get him out of the car and give him CPR but it was
too dangerous on the side of the road.
My mum and dad knew there were services not far up ahead, so therefore got in the old lady's car, with her husband, and my dad drove their car up to the services where they phoned for an ambulance.
My brother who was in our car had recently passed his test, so followed along in our car.
The ambulance was going to be some while because it had to go past the services in the opposite direction, come off the motorway at the next exit, then come back on to "our side".
In the meantime my mum (who was not a nurse but had seen my dad being given CPR previously) got the old man out of the car and endeavoured to keep him alive. His poor wife was watching and I caught glimpses.
The paramedics arrived and took over. My mum and dad went to the hospital with the lady (my dad drove their car). My brother drove me and my other brother, and the couple's dog, home to our house in our car.
I can always remember that the weekly charts were on in the car (it was a Sunday late afternoon/early evening) and a song came on with the lyrics "heartbeat, increasing heartbeat" (it was "This Town Ain't Big Enough for Both of Us" by Sparks in 1974).
Sadly the old man didn't make it but his wife was so grateful for my parent's support. Dad drove their dog back to the lady a few days later. They swapped Christmas cards for a few years but never saw each other again!