Back in the 1980's I was a sales rep and parked up in a park in East London to eat my lunch. I suddenly saw a three wheler invalid carraige careering across the grass with a woman underneath it. It jammed and I ran over and lifted the front wheel to allow the woman to get out. Apparently the woman driver of the 'carriage was the other woman's landlady and they'd had a row. She, the driver, was ranting and raving. I went to a nearby house to call an ambulance and as I did so the invalid carriage burst into flames. There was nothing anyone could do and the driver burnt to death.
It really was bizarre. Strange thing is I was not called to the inquest as a witness.