This is so sad. And he's not the only 600 pounder to leave his home in this manner; I recall reading about others in the years past.
When I still had my coffee shop, a regular customer was (still is) 375 pounds. It would take him 10 minutes to get out of his truck in the parking lot and shuffle to the front door. Those of you who have seen my place know that the distance is only a few feet. I was always afraid something would happen to him while in my place. Another fear was a fire. At the last inspection, I promised the firefighters I would personally carry out my elderly customers if the kitchen in the back was burning, but I wasn't thinking of Tons of Fun. Thank goodness I don't have my shop anymore. The stress from worrying about liability just about killed me.