Earlier quoted context omitted.
I regularly travel Tucson Ft. Lauderdale. 2100 miles. Including ground transport, door to door is 10-12 hours.
That's interesting. You must have some much better train routes out in the big empty spaces in between. What line is that? For me, in DC, the trip is half the distance (1,000 miles) and would take twice as long (25 hours, according to Google).
It is 32 hours if driving 130-150 kph on the freeway (80-90 mph) without stopping for food, bathrooms, gas, or sleep. It's probably a few hundred hours with the train since you will have to go a few hundred or a few thousand kilometers north first.
Interestingly, there is a long train line from Louisiana to Los Angeles called the Sunset Limited. Up until Hurricane Katrina in 2005 it ran between Orlando Florida and Los Angeles,