Oh yes, GPS horror stories. Late one afternoon, actually twilight, we came to a fork in the road (someplace in Texas) and the GPS did not indicate whether to continue straight - change route - or bear right - stay on the same route we had been on for several hours. We were tired and as driver I elected to stay on the same route. GPS squawked within a 100 yards, but it was too late to correct.
GPS indicated an alternate route. As we drove down a back road in growing darkness an oncoming pickup flashed his lights at us several times as the road turned to dirt and the DEAD END sign appeared. There was an indicated left turn at that sign and we groped our way into a one lane dirt road, actually a double track with high grass between tracks. WE inched our way forward and only stopped briefly for three head of cattle moseying across/along the road. Two or three miles of this - it seemed like 100 miles - brought us back to a paved road and another mile or so brought us out onto the highway we were supposed to have taken. The GPS was correct, but . . .
It is good for laughs today, but we did not see the humor until the next morning as we began the tour of the Foretravel factory.