All very easy to say until you are elderly and still wanting your independence.
Perhaps physical exercise should be compulsory to maintain flexibility and movement as that is what most of them are lacking.
Stopping them from driving, dont let them out on there own, what ever next...euthanasia.... seems like a plan until its your turn Think on people, yer not young forever and then people will be looking at you and thinking...what a c''k
Give them space and chill a little. Learn to enjoy the journey and not just the speed