RWE, I don't use AutoCAD for anything. I used it from version 1 through 14, and wrote a surveying application for it in 1985, as well as other external programs to generate drawings from external data.
There are lots of sources of topographical data and maps, but I happen to have a need which LIDAR, USGS, UCDS, ESRI, etc do not address, so I am writing that enhancement for the same 3D modeling tool I use for machine design. That way, I don't have to jump around to 3 or 4 different CAD systems for different types of engineering.
