Kristine Froseth: I just had to take it step by step ... And that's why it's hard to talk about, but it's pretty incredible. For the cast who are not Kristine, was there any way that you ...

The driver is a young woman (Kristine Froseth), whose backstory and reason for her solitary trip is dolled out via phone calls with her supportive mom (Rachel Dratch supplies the voice on the ...