IHCC Web Library
International Highway Construction Corporation, supporters of a highway system connecting most of the world which would include a Bering Strait bridge and Japan-South Korea tunnel. http://www.iijnet.or.jp/IHCC/index.html
Off Road Routes
Downloadable tracks and lanes suitable for 4x4 vehicles documented with photographs, GPS, descriptions and distances, graded by difficulty. http://www.offroadroutes.net/