freebeer
from your description, it seems the map needs work here.
the existing road i checked was tagged unclassified, and should probably be a service drive.
if i read the history right, it had been marked by the Ukrainian paid mappers who were avoiding communication and their edits were reverted here.
i believe someone should give this area a go-over with newer imagery and update the map to reflect reality, including adding the parking area outlines that the paid mappers seem to be ignoring..
same goes for the costco buiding you mention.