BTW., in principle the prototype factory could be built at the mystery "parts distribution center" at Lathrop:
If it's indeed basically a giant machine, then all it needs externally are loading bays for the incoming parts. Having it relatively close to Fremont would allow the use of all the automation and factory maintenance talent of Tesla.
Note that Tesla always had parts manufacturing facilities at Lathrop, and characterized them the following way in the recent 10-K for 2018:
Code:
Approximate Lease
Size (Building) Expiration
Location in Square Feet Primary Use Date
-------------------------------------------------------------------------
Lathrop, 496,888 Manufacturing Owned building
California
In the 2017 annual report they characterized the new Lathrop facility as:
Code:
Approximate Lease
Size (Building) Expiration
Location in Square Feet Primary Use Date
---------------------------------------------------------------------------
Lathrop, California 338,564 Warehouse and February 2030
manufacturing
Lathrop, California 276,228 Warehouse and September 2024
manufacturing
Lathrop, California 271,075 Manufacturing May 2025
Pure warehouses are reported by Tesla the following way:
Code:
Approximate Lease
Size (Building) Expiration
Location in Square Feet Primary Use Date
-------------------------------------------------------------------------
Sparks, Nevada 632,445 Warehouse December 2019 -
December 2020
But in the 2018 10-K they consolidated the new building into a single reported unit:
Code:
Approximate Lease
Size (Building) Expiration
Location in Square Feet Primary Use Date
-------------------------------------------------------------------------
Lathrop, 885,867 Warehouse and September 2024 -
California manufacturing February 2030
Note that 885,867 square feet is exactly the sum of the three entries from the 2017 annual report.
Also note that while the new building is characterized as a 'warehouse', it is
also characterized as a 'manufacturing' facility, which would be weird if it's solely a parts distribution center, IMHO.
So while the default guess is that it's a parts distribution center that might host some of the warehouse space that the Model Y production lines at Fremont will occupy, I think there's still a chance that the new Lathrop "parts distribution center" facility is a "Gigafactory hidden in plain sight", which might host the new "gigantic, gigantic, gigantic" Grohmann Machine that Jerome Guillen teased.