Example:
Your question handles about places that are not even towns, but places in between where there happens to be an opportunity to get notes (gas station, toll stations etc.). In a country that uses the municipality name, it is simple, you can just enter this name. In countries where you can use the town or village name, I always search for the nearest town to my location (which is not always the town name they print on the receipt!!).
I don't think you should use the "city" field while entering notes to enter different information (like "toll station near town x"). This is not very useful (it will be relocated to town x), and you cause the city managers extra work (they have to merge the newly created city profile to town x).




