The Testzone mod adds a small vehicle testing area to San Francisco. It was released sometime on 2003 or 2004 by HQTM Team and was published on June 19, 2008 to Midtown Madness 2 eXtreme. There are some conflicts with this, MM2 Revisited, and other mods that add objects in San Francisco, meaning that neither can be installed at the same time. It is currently available at Midtown Madness 2 eXtreme.
It is made for the player to test their driving skills. It is located in the Civic Center.