It would have been cheaper and more efficient to lay rails all over the US and buy those fast bullet trains from Japan. That would be able to move large groups of people, all at once. Maybe, even get one going to Las Vegas and other US cities in a short time. Of course, the green energy lobby will not go for it with the millions upon millions they get from US taxpayers in the form of subsidies. It goes back to US politicians in campaign cash. Quid pro quo.