My Aunt is 89 and is planning on driving a race car on her 90th birthday. She drove one when she turned 85. However, my MIL is 89 and was a little wack-a-doodle when she was 85 and it has progressively gotten worse. She hasn’t had sound mind since she was about 80.
My dad is 82... I would trust him to make sound decisions. My mother, 80, not so much.
Chris Karamesines still drives a TOP FUEL dragster & he is 85 or 86. He passes the annual physical with better scores than the younger drivers. Nickname is ‘The Golden Greek’.