It was tied in with her maternal instinct, I think. She was at the sink washing dishes when she saw my brother (in her mind) being led off by a man. She ran out into the street and sure enough, there was my little brother getting in a car with a stranger. She feared one Saturday morning that I was going to get hit by a car. Sure enough, 3 hours later, I was under the tire. Maybe, now that I think about it, she was just psychic about cars!
God does give gifts to people. We never know WHY one person gets more/less gifts and it doesn't matter to me why.
Your mother's "gift" about cars, obviously, was to make SURE that you ended up here on FR.