Why Egypt Is Building a New Capital City

I still do not know what they intend to do regarding their dependency to the Nile River regarding sweet water and agricultural land. Nor do I know where they get the necessary resources for their capital from; Not only those for the whole construction, but also for the continuous needs. Do they perhaps build desalination plants such as Israel did? What do they do to gain more agricultural land (making a sandy dessert fertile takes years). How do they plan to fight traffic, I looked at the new city layout again and it is build like the typical US city, with Hubs in the center and outsides of it and residential in between, but everything is cut apart by huge highways, with up to ten (10!) lanes. There is no subway planed, no tram, just busses.
Furthermore how do they fight a very big problem the city is probably already facing, sandstorms? The only somewhat working solution I know of, is to let all kinds of local plants, that can deal with the sand, grow in several Kilometer wide belts around the city. It works similar like the Grass that growth on dunes. The roots basically cause the sand to glue to each other, limiting movement massively.

And lastly what do they do if this plan fails, if not enough people move there, are willing to live in it?
Looking at all the huge city buildings projects of the last 30 years, not one is yet even populated by 75%. Half the living, office and working space in Dubai are empty/unused, in China they built cities for hundred of thousand or even million people and yet they are Ghost Towns. An incredibly size of land wasted, nature and agricultural land destroyed.

I am really curious to get to know the answer on those questions and really hope to see them in your videos from now on. Even if the documentary is then 30min long or more, split up, I don't mind. It's for the better afterall.