I live in NYC and whenever I go to DC I always take the train. It's about the same time as flying but with less chances of delays. I flew once and was delayed for 8 hours and have taken the train ever since. I drove once but that was slightly slower than the train and not as relaxing as sitting back with a drink and a laptop.
To Boston though I usually fly. It is actually much faster if you leave at the right times to avoid traffic which you'd want to do if driving too. It's about 100% faster in my experience.
I drove to Chicago once and that was about 12 or 13 hours. I've flown a bunch of times and it takes, door to door (depending on when you leave, etc) about 4 hours total. So it's much faster.
To Boston though I usually fly. It is actually much faster if you leave at the right times to avoid traffic which you'd want to do if driving too. It's about 100% faster in my experience.
I drove to Chicago once and that was about 12 or 13 hours. I've flown a bunch of times and it takes, door to door (depending on when you leave, etc) about 4 hours total. So it's much faster.