I agree with the goal of combining trains and planes (and buses) in a manner that leverages their strengths while diminishing their limitations, but doesn't this whole process need to start with a solid foundation of proving we can properly introduce and manage frequent and dependable passenger rail in new and potentially hostile territory? Even if you built a rail spur right in the middle an airport terminal would it do anyone any good with infrequent or unreliable rail service? If you were a politician or transportation authority would you feel confident that putting your neck on the line for a scheme like this would pay off, or would you be concerned that it would put your career at risk? I feel like the concept has rational goals worthy of support, but just because it makes sense doesn't mean it wont be at risk of bad faith negotiating and third party interference. Whoever pursues and promotes this kind of project needs dependable support behind them, but I don't see how such a foundation is expected to be built here.