Typically in a novel like 'the lincoln highway novel', there would be a protagonist. This could be a young person, perhaps someone with a goal or a dream related to the journey on the highway. There might also be a sidekick or a friend character who accompanies the protagonist on this adventure. And there could be other characters like an older figure who imparts wisdom or an antagonist who creates obstacles for the main characters during their travels.
I'm not entirely sure who all the main characters are as I haven't read it in great detail, but I assume there are characters who are central to the story's journey along the Lincoln Highway.
In 'the lincoln highway novel', the main characters might be those who are directly involved in the events that unfold on the highway. There could be a character who is running away from something, like a troubled past or a difficult situation at home. Another main character could be someone who is looking for a new start or a chance to make something of themselves. And there might be characters who are local to the areas along the highway and interact with the travelers in different ways, either helping or hindering them on their journey.
Chapter 402, "The Survival Game Officially Begins!", is the clearest early answer because it turns Shen Lan's situation into a concrete plot event. A useful checkpoint is the way the scene starts with What kind of face was it?
Chapter 153, "Word Spreads, Director Sun Takes the Lead in Shipping the CP!", is the clearest early answer because it turns Aunt Ying's situation into a concrete plot event. The chapter turns that into something concrete by moving from Wisps of smoke gradually rose from the small kitchen.
Chapter 148, "None are Normal", is the clearest early answer because it turns Director Zhang Cheng's situation into a concrete plot event. Early on, Exiting the cottage, Director Sun picked up the phone.. By the end, Just as Jiang Li put down her chopsticks, she received the call from....
Chapter 246, "Betting He Can't Last Even One Second", is the clearest early answer because it turns Hua Country's situation into a concrete plot event. The chapter turns that into something concrete by moving from At that moment, not only Su Yinwan but also Shang Shaojing's...
Chapter 449, "Do You Two Have to Be So Abnormal?!", is the clearest early answer because it turns Have's situation into a concrete plot event. Early on, Ahhh, the young master's good looks have finally returned!" "Wuwuwu,....
Chapter 177, "You Annoy Me Just By Being Here", is the clearest early answer because it turns Princess Disease's situation into a concrete plot event. The chapter turns that into something concrete by moving from I'm actually the last?!" After the scores were announced, Wen...
Chapter 356, "I announce, Lili is the best of the night!", is the clearest early answer because it turns Mr's situation into a concrete plot event.
Chapter 255, "Daton Festival", is the clearest early answer because it turns Uncle Zhao's situation into a concrete plot event. The chapter turns that into something concrete by moving from Sounds pretty interesting." "I know this one!
Chapter 122, "Qi Tianyu Scores Twice", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Damn, are we supposed to find the points card in the mud?!" He had...
Chapter 177, "You Annoy Me Just By Being Here", is the clearest early answer because it turns Princess Disease's situation into a concrete plot event. The chapter turns that into something concrete by moving from I'm actually the last?!" After the scores were announced, Wen...