Took the bus from Bethesda to New York, no problems, fast, efficient, everything went well. On our way back, the bus was not the one from the company, it was an “Academy Bus” the space between the seats was ridiculous, either there were 1.5 Dr between seats or barely half a ft. We ended up in one of the non space ones, you have to sit with your legs open to find comfort and try doing that for 4 hours! It was totally horrible. We sat uncomfortably the whole way back. I saw a few other people trying to lift their legs. I don’t know if this was done so more people can fit in but it’s terrible.
If you get to travel on the black bus from the company you are in for a nice trip, if not, good luck!