The Car Was (not) Broken.
When I was a kid my mother
was very safety conscious and said the car wouldn't move unless we had our seat belts on. Then one day when the car started moving before I got my seat belt on I said, "mommy mommy, stop! The car's broken. It's moving and I don't have my seat belt on." I was under the mistaken impression that the car had a mechanical safety device to stop it from moving without everyone buckling up. Turns out I was wrong, but it got me into the good habit of always putting a seat belt on and making sure everyone else is wearing one before driving away. It's helped me avoid injury other then some soreness from a rollover I had a few years back, a type of crash I've heard many people get injured in or even killed in.