I don't think that a 97 year old is necessarily unfit to drive. It all depends on the person. There are 100 year-olds who continue to drive. I do, however, feel that there should be some sort of testing procedure to ensure that people can see properly, have good reactions, etc.
I think, as someone else said, if any other 97 year old had had an accident of this nature, which I believe was his fault because he drove out from a side road, causing injuries, I think they may well be prosecuted for careless driving. And the woman whose wrist was broken was interviewed saying that she had not received a proper apology. If it were me, I would be annoyed too - especially as he is driving again, and without a seat belt.
Anniebach I am sure there are lots of people who are very reluctant to give up driving but who have become aware that they are less able to do so safely. I should imagine many of them won't have the same sort of transport choices as the D of E and will really miss out by not being able to drive. I think he's a rude and selfish man.
I do dislike people concluding their remarks with "end of", as if their views are more important than others and should therefore determine the end of the conversation.