Your fear may be justified ;-) My daughter and I were on a bus recently in Boston, trying to get to our hotel. The traffic was so horrendous that the bus driver eventually gave up on his route and went somewhere else entirely, which caused much angry shouting, and some celebrating, by the passengers.
Meanwhile, the guy sitting next to us was drinking one beer after another from a paper bag. I guess he felt guilty, so he graciously offered my daughter and me some, though we declined, didn't want him to have to go out again to get more when he got home. Another passenger was so drunk that his wife had to stop the bus so he could get off and throw up.
Eventually we got off at a subway stop and made our way to the hotel from there.
Rescue from Orthanc: