A group of friends use a 2012 GMC Terrain Smaller SUV and its navigation system in a geocaching scavenger hunt. They use the SUV’s interior USB port to play MP3 clues along with OnStar gps tracking to locate the coordinates of the geocaches they hunt.
And is a USB with “clues” allowed via the normal GC.com rules? And even if the answer is “yes”, would you ever plug an unknown USB drive into any of your devices?