I presume that some of the major costs include actually building a hangar facility in which to manufacture or construct one of these things. I was just thinking of a hangar built in the city of Windsor for maintenance and repair overhaul that fits a 747 and a 737 side by each, but it's only about 40 feet high. It cost $21 million. I imagine that if you more than double the height of that and get to 10 storeys, we'd be talking about a significant investment just for a single piece of infrastructure.
