mine was extremely old roads, had lived there all my life and noticed that two roads in the country with entirely different names were divided by a gully about 200 meters wide and 60 meters deep with NO road or bridge EVER existing there through it. but google argued it was really a road.
other was within 2km of that area, a road into a farmers field.
i sorta suspect they were items added in to spot if someone's stealing googles proprietary map data. like how a dictionary company will throw in a few random fake words to see if anyone copies their text and publishes it as their own.