3+ stars. While I liked this story and saw where the characters were developing, I found the YA voices a little too immature this time around. The road trip and stuck-in-a-car situation just served to amplify those voices with what felt like a captive audience approach. The growth of the characters was satisfying to watch, and the ending was fulfilling. With that said, even after reading the first two books, the voices were just a little too "young" this time for my tastes.