Maybe I cannot see how to finish the implementation yet, and that is okay. I still have other patterns to apply.
Looking at Figure 12-9, I should ask myself if any other patterns show up that I had not previously identified. I do not see any additional patterns. There is only the challenge of hooking the V1 and V2 CAD/CAM systems into the design. That is what the Facade and Adapter patterns will do for me.