>>1364862Very small or non existent demand for it.
Actual existing alternatives for said demand
IE--I worked for a factory that practiced. "just in time " manufacturing.
two of our trucks crashed and assembly line was about to run out.
Chartered a plane and flew down enough for a shift.
Hired second delivery truck and delivered enough for second shift.
High speed cargo rail runs into the same problem as supersonic passenger flight.
you spend more time at the airport,
Find way to spend less time at the train yard and sorting -- you will eventually get higher speed.
