When thinking about teamwork, competition and innovation and how important the Model 3 is for... A lot of things, the production answer keeps coming back with three parallel lines. Where improvements ripple through. Again and again. I don't see any other approach that isn't brittle to people, or some bottle neck (more expensive than it should be) machine, or process stagnation. Definite lack of vision here. Please suggest some other way to obtain rate of production simultaneous with rate of improvement. Competeting teams just seem best from a redundancy, people dynamic, improvement perspective. I have seen competition between shifts, but the product mix always fixed outcomes. And process improvements did not ripple. The answer keeps coming up Three Parallel Lines.