Combining the two proposed production rates yields 421,563 vehicles per year, or 8,106 per week. That’s 20% less than Musk initially proposed, considerable in the eyes of shareholders. Of course, Musk did word his statement so that he wouldn’t be lying as long as Tesla had a single week where it produced a combined 10,000 vehicles per week by the end of 2018, but ambiguity with so much wiggle room for the output numbers is something shareholders will not be happy with. Of course, there is a brighter alternative. If Tesla debuts a new model next year, such as the Model Y, or refreshes the Model S, Model X, or does all of the above, output numbers could be bolstered so that they’re more in line with investor hopes.