It’s worse than silly. It’s already been demonstrated that the idea has no merit. It can’t support itself without subsidies. Nobody cares to spend triple the fare to save three hours. Anyone who has that kind of money to spend on international travel is more likely to fly private jet than public. But NASA thinks they should promote this ridiculous idea.
Hey NASA - it already failed, Charlie.
One hour flight, 3 hours of waiting in line for cavity checks.