Nah... the problem is not the vacation "overseas" but the amount of domestic flights that could have been avoided if we had a proper (fast, cheap, comfortable) rail network.
How many flights do we have between, e.g, Boston-New York, LA-San Francisco, Dallas-Houston, Chicago-any city in the midwest? Thousands of flights that are less than 3 hours in duration, but we have to take it by plane. Maaaybe some of them could be made by bus, but buses are slow and super cramped.
Now imagine if we had good train service. Even if we were not talking about bullet trains, if you count the time it takes to board/deboard + the time it takes to get to airport to the city, there is a good chance that the train travel would take less total time.
It's hard to compare with cars because cars/fuel/highways are seriously subsidized.