Model lines (a.k.a. pilot) are a proven method to initiate a lean launch. The model, typically one specific "line" or value stream within a single facility or operation, provides a small, focused and controlled playground for implementing lean.
My three children are well beyond the Barney years. It's been about 10 years since I was subjected to that song, but unfortunately it is burned into my brain, "Everyone is special, special. Everyone is special..." Of course, I don't disagree with that sentiment, just the inane song.