Here is a AutoCAD DWG drawing file created back in 2002 for fun and testing by Aaron Johnson and recently updated by me. I have provided the DWF as well as the DWG for download and use for fun.
View it in Freewheel nothing to install works in most browsers on most operating systems. I updated the link so you do not need to log into Freewheel. When you have a DWF on Freewheel you have the option of setting a password and allowing a collaboration session with markiung up and notes all for free.
LINK to DWF in Freewheel (updated 20, July 2008)
Why Freewheel? Be free of software installs, free to view, and free access to data.