Thanksgiving is next week, which means quite a few people will be journeying somewhere on a plane, train or automobile. (Dr. Gridlock offered his Getaway Guide over the weekend, so make sure to check that out as you make your travel plans.) If you have questions about traveling next week — or if you just have a question or complaint regarding your daily commute — Dr. Gridlock is here to help. He’ll be online Monday at noon answering questions. Head here to submit questions in advance and head back at noon for the discussion.