I can't imagine anyone flying to a destination within a four to five hour driving range;the time spent preparing for a flight ,getting to the airport 2 hours early as suggested,security screening and abuse,more time spent deplaning,renting a car or being met,etc.
Trains make sense for moving large quantities of material in stable patterns,not so much for a population as mobile as Americans have become.
Of course the European mindset is jealous of such freedom.
But I live three blocks from the train station and am physically able of carrying 30-40 pound duffle bags to the train.
That is not a normal situation for most persons, especially those with children.