The story goes that even after the Return they tried to keep the roller coasters going. They said it reminded them of the before time. When they didn't have to worry about people rising from the dead, when they didn't have to build fences and walls and barriers to protect themselves from the masses of Mudo constantly seeking human flesh. When the living weren't forever hunted.
They said it made them feel normal.
I'm so super excited about this book coming out!