Growing older presents many obstacles and for the fortunate who live long lives in relative good health, unavoidably there comes gradual losses of independence, perhaps the most difficult of which is giving up the car keys. The loss of the ability to drive translates into not being able to run to the grocery store, attend church or visit friends without depending on others. It can often cause panic at the thought, but if safety is compromised by a senior continuing to drive, it becomes a necessary sacrifice.