Here is the article:

http://www.latimes.com/news/nationworld/nation/wire/sns-ap-us-stranded-motorists,0,6801317.story

Basically, the couple, driving from Oregon to Reno, followed their SUV's navigation system (GPS) directions and turned onto a (presumably unplowed) Forest Service road, driving for 35 miles until they got stuck in 1.5 feet of snow. On the third day they got enough cell signal to call for help.