A childhood belief about cars

I remember quite vividly a time when I was about five years old. After visiting a McDonald's, my dad was driving my Mom and I to my Grandmother's. I was happily eating my Happy Meal when suddenly I realised that the family was in grave danger. Hysterically crying, I told my dad he would kill us all because he was "drinking and driving" just like the tv commercials warn you not to.
My mother got a huge kick out of trying to explain the relative safety of the effect of strawberry milkshakes on one's motoring skills.