Business proposition

Forgot to upload a site image to explain what I am talking about, when I published this post originally. Here is a pictorial view.

Well, I've got an excellent business idea. I cant put it in action since I am not in Karachi. But it's yours for free, if you are up for it.
Thinking of the submerged underpass turned swimming pool is right there in Clifton, and the dockyard is nearby, one might as well run a submarine service to get people and their vehicles across the underpass.
Dont like that? Here's another one. Suck out a little bit more of water (if the surrounding area could use some more, so that there is some head clearance in the underpass to operate a ferry. Operate a cruise across the damned thing. From that, you can go crazy about the opportunities and value added services. Here's another free idea, throw in a few fish as well, makes for a great cruise. There's money to be made here.