The SUV Harper rents becomes the major symbol of Isolation and Obsession as it intersects with The Consequences of Dishonesty and Distrust. When Mira first decides to get a ride with Harper and the others, she isolates herself with this group of strangers. The trip is meant to only take six hours, but the weather and a series of unexpected events cause it to take much longer. Mira will also eventually discover that one of the strangers, Josh, is a person who met her on the day her Aunt Phoebe died and has become obsessed with her.

The SUV is a box that has just enough room for the five strangers and their few belongings. As the plot progresses, each person notices one of their belongings is missing. This creates a dynamic where the strangers understand that one of them must be lying and but don’t know who the perpetrator is. The people inside the SUV have become a small society that begins to fall apart due to their isolation and their inability to trust each other.