London could have a floating airport in the future

Before anyone is confused, we do not mean that the airport afloat in the air, but in water. That's the idea behind a high conceptual airport technology called "London Britannia Airport" and that will be established in the estuary of the River Thames in London.
Gensler architectural firm behind this proposal is expected to cost no less than $ 80,000 million. As we said, the building would be located on the estuary of the river above English and have four runways floating 5 kilometers each. The airport access would be through a high-speed subway. What if you drive? For there is no problem, as close to the airport, and obviously on earth, there will be three terminals to leave our vehicles .
The proposed signature also includes some modifications to the current Heathrow Airport. The old airport would become a green airport and flights in excess would be sent directly to the airport runways Britannia. But that's not all, as Heathrow would also become a kind of ecological city with accommodation for 300,000 persons.
It is estimated that flights can be made 24 hours a day since being in the middle of the estuary, the sound of the planes will not be a problem. Much of the energy of the building be achieved through turbines would be located around the airport.

 

In the past, both in the U.S. and Japan sought to create airports like this, but nothing was realized due to the high costs. Will it become a reality in London?