"Because of Mr. Kim's background as a technology analyst, observers speculated that the family had used online mapping to find their route. However, Mrs. Kim told state police that they had used a paper road map, an account supported by the Oregon State Police, which reported that the Kims had used an official State of Oregon highway map."
No I didn't, I the original search for him and his family and the immediate aftermath that there was a great deal of discussion about them getting lost due to following a bad GPS route.
http://en.wikipedia.org/wiki/James_Kim