Theoretically it can be, though usually not, so the question is what should be the law to cover the general case. It wouldn’t be such a problem if it were easy for them to get around without driving. Either self driving cars, subsidized Ubers, public transit, walkable cities, home delivery, etc.

My opinion is that in the general case people over 70 shouldn’t be driving and I say this as someone who has 4 spritly grandparents in their 90s. I really don’t like how dangerous roads are, a fact that we accept because we did not really have good alternatives, now that we do we should implement them.

Paul Newman won his last race at Lime Rock in Sept. 2007 driving a 900-horsepower Corvette when he was 82.