In the town and surrounding area where I live, if a senior citizen can no longer drive a car, then he has to find a friend or relative who is willing to drive him to and fro, or else he stays home.
In this area, there are no trains, buses, Uber or Lyft, or taxis. - there's no public transportation AT ALL! EVERYONE is dependent upon their auto for transportation.
Most seniors who live in these small towns can't afford to move to a large city where public transportation is available. The cost of living in a large city is 5 times greater than living in a small town.