Old man walking in a square

Over the years I have been amazed by this old man who walks around this one patch of concrete every morning. I have seen him for the past four years, only in the morning though. He goes out around 6am and walks for one hour around this square patch of concrete. Usually one to two cars are parked in this spot. He will walk the longest route around the cars. If the cars are too close for him to get around he will just walk back and forth. This morning it reminded me of a movie where a man is in his jail cell and the only exercise he can get is to walk his 6x6 foot cell. Makes me wonder if this guy was in jail for a long time. I say this because he could walk in a circle around the driveway or even a larger circle around the complex we live.