The GPS has no idea why you are doing this. You do.
There is a bowl of noodles waiting somewhere in Alabama, and apparently that is enough justification for another hour behind the wheel. Once the craving gets specific, ordinary Chinese takeout stops being useful.
You start thinking about dumplings with chewy wrappers, wontons swimming in sauce, scallions, chili oil, and the one dish a friend mentioned three months ago that has somehow occupied permanent space in your brain. That is how certain restaurants become road-trip destinations…