if it actually ran at an acceptable speed.
So, a train service between Chicago and Miami via Washington DC (as Amtrak’s Floridian will take) is just about 1700 miles (about 2700 km). It would take a train traveling at about 235 mph (378 kph) to meet that seven hour target with zero stops along the way. There’s maybe five train services in the world that even get close to that operational speed and they all travel between cities that are like 250 miles (about 400 km) apart.
Do we need high speed rail in the USA? Yes, absolutely. Is a high speed rail route between Miami and Chicago viable? No, not really. (Edit: my phone keeps auto correcting “it” and “is” to “it’s”)
Also, not for nothing, long distance sleeper trains are actually making a comeback in Europe and Asia… so maybe we’re actually ahead of the curve on this one.