From an AP story in the San Francisco Chronicle:
A Nevada couple letting their SUV’s navigation system guide them through the high desert of Eastern Oregon got stuck in snow for three days when the GPS unit sent them down a remote forest road.
On Sunday, atmospheric conditions apparently changed enough for their GPS-enabled cell phone to get a weak signal and relay coordinates to a dispatcher, Klamath County Sheriff Tim Evinger said.
“GPS almost did ’em in and GPS saved ’em,” Evinger said. “It will give you options to pick the shortest route. You certainly get the shortest route. But it may not be a safe route.”