Apparently they weren't the only ones, lately:

"GPS-led travel goes amiss; 3 Ore. parties rescued"

http://www.newstimes.com/news/article/GPS-led-travel-goes-amiss-3-Ore-parties-rescued-305849.php

Snippet:
"The most common advice was high in "duh" content:
"You can't follow GPS blindly," said Hyde of the national AAA."
_________________________
Improvise,
Utilize,
Realize.