In article ,
Jose wrote:

...and we let them
continue to drive just to make them feel independent.

It's not a question of "feeling". If we take the cars away, who will
drive them the six miles to the grocery store?


When you reach my age you'll start to be interested in and learn about
the ideas for "virtual retirement communities" that are just now
emerging in lots of areas, to solve this and many other problems.

Or try

http://www.stanford.edu/~siegman/passengers_as_packets.html