Think about it for a moment. Have a little vision. Look at a map. Visualize elevated, high speed, passenger and freight trains powered by nuclear power plant created electricity criss crossing the country using the Interstate Highway system's r.o.w.'s. There is an interstate fairly close to just about everybody. Park and go. Trains are elevated, so no problem with collisions or impact with ground transportation or animals. System is one way like the interstates, so no traffic problems except in the timing of one way trains.
Visualize a train with lots of useless bureaucrats in offices running it badly, a train that doesn't go anywhere near where I live or where I want to go, a train I never use...but have to pay HIGHER TAXES for anyway.
Did you know that Disney's elevated monorail, even, is 1 million dollars per mile of track?
Did you know that for any new elevated track to be built, it HAS to have drip pans and a handicap accessible walkway along its ENTIRE LENGTH? Did you know that? Who is going to pay for that? Who would want something that ugly going near their home, ruining their property value with the ugliness and the clattering noise of a train above the greenbelts and noise abatement hills?
We need some vision in America, something to excite us as a country. There are so many nay sayers, gloom and doomers, nabobs of negativity inter alia. I think it's time for some excitement.
I think you need to stop wanting to spend MY money for useless World's Fair dream projects that are a waste of money and would become money-sucking eyesores that would fail within a couple of years. I get plenty excited when someone CUTS MY DAMNED TAXES INSTEAD OF RAISING THEM TO PAY FOR ASININE PROJECTS LIKE THIS.
France, 1959.
The promised dream:

The reality less than a decade later.

Quit trying to waste my money. Live in the real world, please. Trains are good for freight when handled by private companies like CSX. THAT'S ALL.
If this was a good idea, private industry would already have done it!