I read letter very carefully and I stand by my interpretation. I also know that you get what you measure. And you don't get what you don't ask for. So if you are asking for a demonstration of 850 parts a day, for a day, well, that's not 5000 steady. There could be other requirements that are not spelled out in the letter, like 5000/week steady, but overall tone of the letter makes me think this will not be the case (btw, I still like the letter, it shows significant progress). However, situation is worse then Elon thought and expected, and there is a mess in the factory. Contractors, sub-contractors and sub-sub-contractors... Drunken-sloth competency levels of some contractors, and they still have contracts... I'm thinking Tesla is still building many production competencies, and contractors were brought in to help, but there isn't strong overall process of review and enforcing contracts, commitments etc. Management of everything dynamic is ad-hoc. Tesla was in a "throw money at the problem" mode, and it wasn't executed well. So some of the critique of Tesla execution by shorts is rightful. I've felt poor execution even as a customer buying my Model S, which is the first time (and a reason for) I dropped my leverage substantially.
But this, "money no object" policy stops now. Which is also why I think no second M3 line for 2018. Perhaps Elon is re-thinking quality, but not only car quality, but also in the processes, employees, hiring and spending.
This all (mess) makes me think that most department will be between 3-4K by the end of the June and will barely pass 850/day test (5950/week). I just hope it's 4K steady, rather than low 3K.
And here is my primer in reading Elon speak, and I have some experience because of both 1 tenure in doing it
and 2. I speak Engineering language myself, and I've known to say stuff like he does a decade or so back, and be confused why people didn't get it
Elon: "Another set of upgrades starting in late May should be enough to unlock production capacity of 6000 Model 3 vehicles per week by the end of June."
Unlock is not the same as achieve. Unlock just means that there is a possible path to 6000 (probably critical component build, like battery or something akin to it), but path still needs to be discovered/traversed/executed on, and problems on individual station level and overall synchronization are still to be discovered and solved.
(Parody: Since I, Elon am an optimist, I'll assume we breeze through these in two weeks. Wait, could it be longer?! Naaaah...)
Elon:"Please note that all areas of Tesla and our suppliers will be required to demonstrate a Model 3 capacity of ~6000/week by building 850 sets of car parts in 24 hours no later than June 30th."
This is how Tesla Production Manager reads this
ppl will always game the system)
You will need to be "certified" by achieving this goal(850/day), in isolation, independent of other departments and overall process synchronization. Demonstration will be ideally the full day run, but if you are particularly crafty manager, maybe you can run burst for 2hours, heck even 1 hr, and extrapolate to 24hrs? It will depend on the quality of your manager and your relationship to accept this or not. Of course, it will take months afterwards to achieve this same goal as a steady state. Outside of this goal, you will be required to run steady production at the speed higher than slowest other department, yet to be determined and communicated. Probably going to be close to or 4K/week, but you are not going to catch a lot of flak whatever it is,
as long as you are not the slowest department. Now, If you
are the slowest department, do we need to talk...
So, yeah, I'll be happy with low 4K steady achieved by the end of June after reading this letter... But, more importantly, I feel good that I know they're on their way there (5-6K/week) ...