Map 3D 2010 Surface Extension

Ripped from the Subscription website:

Surface Creation Extension for AutoCAD Map 3D
Release Date: 2009-05-28

The Surface Creation Extension for AutoCAD® Map 3D 2010 software helps users create, visualize and analyze terrain models and improve design processes when working with point data collected by surveying, scanning, and GPS instruments and devices. Using the Surface Creation Extension, users can

Quickly create surfaces from external point files, AutoCAD® point data and block references in drawings, as well as point and contour data that reside in FDO data sources such as ESRI SHP files. Use a combination of these data sources in different projections to create a surface. Then use AutoCAD Map 3D functions to create elevation contours for mapping and related projects.

Use AutoCAD Map 3D software functions to combine surface, CAD, GIS, and aerial imagery to effectively visualize sites in 3D and perform elevation, aspect, and slope analysis as well as perform sunlight studies, enabling you to make better decisions about land development projects.

Easily exchange surfaces via GeoTIFF format with other software packages such as AutoCAD® Civil 3D® and ESRI® ArcGIS® software.
This extension is available in English only, but will install on all language versions of AutoCAD Map 3D 2010 software.

More on this later...after I play with it, that is.