Once, we drove to Monument Valley in Utah from Chinle in Arizona using our GPS. Leaving Monument Valley for the trip back our GPS directed us to go in the opposite direction than we came. It then sent us down a narrow road along the edge of a butte, and then into the desert along a dirt road. We followed the GPS as it directed us onto one dirt road after another each less traveled and well marked than the one before. Soon, we were literally in the middle of nowhere, with nothing in sight, no mark of human habitation seen within the last hour. Finally even the last trace of a road vanished, and we were left in the desert, surrounded by powdery sand of uncertain depth, although the GPS told us were on a numbered state highway and beckoned us on further into the nothingness. Had anything happened, had the car been stuck in the sand, or anything, we would have died. Very gently, I inched the car around to go back the other way, and it was hours before we arrived back in Monument Valley. Suddenly the GPS unit flipped its directions around and sent us back to Chinle the way we had come in the first place.
Crazy! The same thing happened to me, only I was driving through Ukraine. GPS took me through a Ukrainian military base and out on the firing range before I knew where I was!? Luckily, I back tracked before I was shot...the gate guards have me strange looks though...
In a bit of a roundabout way, you make My point, mate.