I just waited a bit, then turned back to the car, to drive off to wherever it was I was supposed to be. (23.49)
In the very last line of the novel, Kathy shows no signs of resistance. Kathy even has her car and we know that driving has a lot to do with freedom in this novel. But in the end, Kathy's car isn't going to carry her to liberty. Instead, she's going to submit to her fate, and drive herself to wherever she's "supposed to be."