An American couple who relied on their SUV's navigation system to guide them through the high desert in the state of 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 mobile phone to get a weak signal and relay co-ordinates 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...