Have any of you guys ever travelled by train in the USA? I'm taking a little trip in a couple of months and I'm seriously considering taking a train instead of driving. I've never been on a passenger train before, however, so any input or shared experiences would be appreciated. If this would make a difference, I'm going from Charleston, SC to Philly, PA, with a stop in North Carolina and Washington D.C. I assume I would just have to take multiple trains.