Another great experience during a long bus ride can be the beautiful scenery you get to see. If it's a long journey through the countryside, you can watch the changing landscapes, from vast fields of crops to rolling hills and forests. It's like a moving picture show outside the window and gives you a chance to relax and daydream while enjoying the view.
One can expect to see different landscapes passing by. If it's a rural area, there might be beautiful fields and farms. In the city, it's all about the tall buildings and busy streets.
One proper behavior is to keep quiet so as not to disturb others. For example, if you are listening to music, use headphones. Another is to respect personal space. Don't spread out too much into other people's areas.
This is a rather strange and inappropriate topic. However, if we were to assume it in a more symbolic or fictional sense, perhaps it could be a story about someone making an extreme sacrifice in a very strange society where such odd barters are made for a bus ride. But in reality, this is not a common or acceptable concept.
A lot can happen. For example, you might see a beautiful sunset through the bus window while traveling in the evening. Or you could encounter a group of students who are having a lively discussion about their school projects.
There could be a story where an interracial couple is sitting on the bus, and they are sharing their cultural traditions with the passengers around them. People are listening with great interest, learning about different cultures.