resistance training speed

What if we started connecting super high-speed rails to airports and gave people a choice for travel?

We could build these super high-speed trains that would run through a vacuum and go faster without the air resistance that could take a person from California to Washington DC in 8 hours or something.

If you did that the whole trip could actually be done in about 7 minutes since the train would be able to travel in a vacuum at about 30,000 MPH .
Add a few more minutes for the time of the train to enter and leave the vacuum so passengers could get on and off at each end.

Such a tunnel would have to be built at least 2000 feet under ground to make it safe from most leaks and from sabotage.
The cost of building so far down would be enormous and would potentially cost hundreds of trillions of dollars to build.

One crash at that speed would destroy the tunnel and kill everyone on board, with no chance whatsoever for anyone to survive.

The cost of rebuilding the damaged tunnel might be so great that the entire system might be abandoned especially with so many who now be too afraid to take a chance riding in it.

If you did get it built each ticket might be prohibitively expensive to pay off the enormous cost.

The huge advantage would be that it theoretically be connected across the world so that you could go from any country to any other country within about a half hour.
You could live in Australia and commute to New York each day, to work.