One day, when I grow older, I’d like to roam the cities of Earth and enjoy the diversity and beauty of the 21st century society (hopefully things will be better than they are today). I always thought that a motor-home is a good idea to do this. However, the engine would lie unused for long periods of time and the sewage requires a lot of maintenance. Not to mention that any reasonably priced motor-home is also quite small.
So then how about a detachable apartment?
You come, you visit and then you take the daily truck, moving you to wherever you wish. While being transported, you sit in your comfortable home, doing whatever you wish to do.