Apparently, it is believed by a lot of people that if you follow a stream down hill that will take you to civilization. That is not always true, particularly in rugged mountains. I have a friend who did this (20 years ago) they walked for 5 days
following a riverbed. Helicopters found him and his friends... They were lucky
but they had a long ways to go yet to find civilization when they were found.

so they are saying stay near your car and make your car seem as brilliant and as big as possible (put shiny things around the car, like hub caps)