[headpunter]

quoted from chevrolet.com/camaro

Before I go on, perhaps a few words on what an IVER vehicle is and why it is important to the program. In essence, an IVER is a fully representative prototype vehicle. The abbreviation IVER stands for "Integration Vehicle Engineering Release." So the end vehicle is the culmination of the computational and hardware development of all the vehicle subsystems. It's also the only time we will prototype a whole vehicle in the real world.
What do we use an IVER vehicle for? Well, it performs many functions in all areas of the business, including engineering, manufacturing, quality, marketing, etc. Its significance to the program is paramount; however, as in the case of quality, manufacturing, and engineering, the focus shifts from the virtual world to the physical world. It is also the time when the program shifts from development to validation. So the design of the program is now essentially complete, and our focus shifts to the execution and validation of the product into a really great car.