To the elderly gentleman I passed on my way to work today

Look, I understand that potentially loosing your license and not being able to drive is a horrid thing in an area with really bad public transportation.  But there is a point at which you need to consider hanging up the keys and cutting up your license.  A sign that you have reach that point would be when you’re passing a Speed Limit sign that says 55mph and you’re doing 20mph and the roads are in perfect condition.  When you are driving that far below the speed limit, for mile after mile, you are a hazard.  Not only to yourself (which is, after all, your right), but also to everyone else on the road (which is NOT your right).