it is hard to give up your freedom, my parents are not quite to that age yet, luckily all of my grandparents were smart enough to recognize their need to stop driving on their own.

My grandfather on my moms side mentioned he was going to stop driving when he turned 80 in a few weeks, he had always been a safe driver and i questioned whether it was necessary, I had not ridden with him in a few years, about a week later we were heading north on US 95 in Palm beach on the way to the grocery store, (3 lanes north, 3 lanes south and a turn lane) He stopped my dad's sedan in the middle lane of the north bound lanes to make a left hand turn across 5 lanes of traffic. I just about lost it, how we didn't get creamed I don't know. Believe me I drove home. He gave up his driving the next day.