We all know that Tesla has created some incredibly innovative vehicles. What I want to know is, in detail, how is Tesla innovating in the factory? There doesn't seem to be much public information on this subject, but it is without a doubt, hugely important in terms of profitability and ability to meet customer demand. I assume that their goal is to make vehicles at least twice as efficiently as the traditional auto makers. I did hear Elon say in the 1Q conference call that labor hours per vehicle dropped by 20% and more improvement was on the way but he did not say how.