We see Lorelai’s road trip plan in action – she is driving aimlessly around, and neither she nor Rory know where they are. It’s an obvious metaphor for how lost Lorelai feels at the current moment, and how she has no plans on how to navigate her life or move forward from here.
It’s also an opportunity to show Lorelai and Rory’s different outlooks on life, with Rory becoming increasingly alarmed and panicked at their lack of planning and direction. Interestingly, Lorelai makes an offhand remark about driving into the Pacific Ocean of the west coast rather than the Atlantic Ocean of the east coast – have her thoughts naturally wandered to Christopher in California? Or perhaps it’s a sly meta-comment about the road trip obviously being filmed in California rather than New England.