Are you kidding me? My mom is 85 and she still drives everywhere. In fact, she drives three days a week about 20 miles each way just to go to her water aerobics class. Both my parents are very capable drivers. My dad will be 87 in a week or so, and he and my mom drive up to their cabin at least once a week which is about 40 miles one way.
My Uncle is 85 and drives to and from two jobs. He has relatives that lived to age 100.