Anyone who lives long enough will reach a point where he should no longer drive. With my mother, it was vascular dementia, exacerbated by a brain tumor. She could drive ok, but would get lost and didn't know where she was. We took he keys away, and in a short time was in assisted living, followed by a nursing home.

My father once said to me, "Son, I would like to be permitted to die like my father did, peacefully, in his sleep... and not crying and screaming, like his passengers." At the time, I hadn't heard that one before. He really had me going.