いなほのグリーン車が理想では？
https://tetsudo-shimbun.com/archives/002/201711/large-5a0ec7274ae5c.jpg
https://tetsudo-shimbun.com/archives/002/201710/large-59f31d7e129b4.jpg
https://tetsudo-shimbun.com/article/topic/entry-1224.html#group=nogroup&;photo=5