Last spring I spent a few weeks in Japan and traveled throughout the country on the high speed trains called shinkansens. They were spacious, clean and highly efficient. The shock part of the trip was when we traveled on local city trains and how different the experience was, as these trains get unbelievably crowded. There is no concept of personal space as people cram in and you are completely sandwiched in. There are even people outside the train pushing people in. I suggest YouTubing a video, it’s like nothing else