also most Autodesk software needs local admin to run right or at least the older ver of it did.
AutoCAD 2013 (and 2012, and at least a few more versions back) run fine without admin rights. It helps to have write permissions opened up on various AutoCad folders (Program Files\AutoDesk, ProgramData\Autodesk, etc.) to allow for customization, but the application will run fine. Admin rights are only needed at the time of initial installation.