Maps are cool. And if you’ve been following what’s happened among online purveyors of mapping services like Terraserver and MapTech, you’ve seen the increasing quality of data cross-referencing GPS coordinates and digital aerial photographs. Now Magellan is doing 3D topographic maps for the PC that synchronize with a GPS reciever. In other words, you can identify a location from a 3D perspective on your desktop (or wirelessly connected laptop in your off-road vehicle), enter it into your hand-held, and go find it (and get back to your rig). If you like to hike and fish, it sounds like a lot more fun than finding yourself in the maze of contour lines on a 3-foot wide topo map. The new service is a cooperative venture between Magellan, Trails.com and NavTech.