Vacation planning (4)

(I'll move this from Roman numerals to simple digits on this one, because the thing would end up a mess :D )

The train enters the picture!
Talked to a cousin of mine living in NYC, the simple and most effective way of getting around Washington to Boston (if you are not in hurry, or on bussines) it is by train! Or maybe bus, so, he recomended me a train called Acela (which has nothing to do with "gacela", but with "excellence" and "acceleration")

As far as buses go, he pointed me toward Bolt Buses, but, for the little I searched, there is not a direct one from Washington to Boston.