You can see it in some night buses of WILLER Express. If you do it in Japan, you're lucky!
車内掲示用イラストを作成しました(Willer Bus)
A bus diver worries about his passengers when they take a rest. They can't often come back to their own bus because many WILLER Express bus stay there. So he wants them to take a picture as a memory with bus number. That's good.
