Hi friends, have such an idea

based on youtube video hosting and its ability to link with links to make an interactive quest-walk.
This technology
has already been used in advertising.
here is
a small example of how this will work.
How it works, I think everyone understands.
Perhaps the question is why? If you make a high-quality and interesting walk on the subway and people will be interested to watch it, then you can advertise on this site in perspective. But this is not the main thing.
And the main thing to interest as many people as possible to remove walking to a couple of stations in different subways of the world. Make this project become global. So that sitting at home I could walk on any metro of any city.
Waiting for ideas and criticism in the comments.