When Phil stops here to refuel, Carol exits the RV without Phil's knowledge. Going inside the store to decorate a t-shirt, Phil starts to drive off. Carol runs outside and shoots her gun, but Phil fails to hear the bullets going off, due to the radio being too loud.
Hours later, Phil notices her disappearance. Retracing his steps, he returns to Oklahoma, however, Phil believes she is at a Speedy Pump. Phil drives to every Speedy Pump in Oklahoma, and fails to find her. Looking at her notebook, Phil believes she is in Tucson. Heading to Tucson, he finds it deserted.
In "The Boo", Carol continues to wait at the EMCO gas station. While in Tucson, Phil successfully sends a train with a message on it. Carol sees the message and drives to Tucson, where the two reunite.