Mid seventies, in the way back home after the weekend in the Simca 1100 of my parents. My father lost the control of the car (he was drunk...) and the car finished through the grille of a... cemetery. Fortunately, none of us was injured.
As I was 6 or 7, it should have leave a mark on me. But, during the following weeks, I was mostly upset because I left my toys in the car after the crash, and so I lost them

For the record, it took ten years and two more accidents (including another -smaller- one with us and one in which he was seriously injured) for my father to quit drinking. He is now sober for 30 years, and never had a car accident again.