Yeah, I was in a car accident some years ago and the seat belt bruised my chest. I had a class that morning and I went into it about 20 minutes before it ended and the professor said, "you're a little late." The class laughed. I responded, "Yes, I was in a car accident, but I didn't want to miss the first day of class."
Anyhow, my dad is getting old and I worry about him driving. He's 82 now and he still drives too fast. We're trying to convince him that maybe he should folks drive him places. His mind is still sharp, but you worry about reflexes, like you said. I hope you mom stays in good health, though. Getting in an accident is pretty traumatic, even for younger folks.
We had to take my Grandpa's license and keys away a few years back. It was hard, but he had gotten in a fender bender and just drove away from the accident.