Has this guy given any thought to the 100,000s of people who's lives would be turned upside down by such an inane suggestion?
I am thinking of all those employed in and associated with the air transport business at Heathrow, not to mention the disruption caused by building works on such an extensive scale over several years.
I would suggest the addition of a 3rd runway at LHR would probably cause far less disruption and probably keep many more gainfully employed that this gentleman's wild plans.