There is a plaque commemorating the US High Speed Rail pioneers at Princeton Junction, one of them was my step-father. The US could have rail service like this if the government was willing to foot the bill. But these quotes pretty much sum up why France can leave the US in the dust sitting in a traffic jam.
Rail subsidies are largest in China ($130 billion) and Europe (€73 billion), while the United States has relatively small subsidies for passenger rail with freight not subsidized.
This film is in French, but you can get the point of WHY rail is important, yet the US is ignoring it.
Cross-subsidies between lines go a long way towards explaining the development of the high-speed rail system in France. Thanks to those subsidies, it has been possible to develop a TGV service even in towns that are located far from LGV lines. TGVs also can run on conventional lines provided the lines are electrified.
So, the US COULD easily develop high speed rail capable of speed in excess of 357 mph (or 574.8KmPH. TGV holds that record).
The sad thing is that the people chanting Make America Great Again are against a Green New Deal, which should have rebuilding rail infrastructure as an integral aspect.
Sadly, the clip is in French, because a lot of people in the US need to see it.