> No, they are all 100% made by Panasonic, with Panasonic technology, in buildings that Panasonic master-leases from Tesla
Gigafactory Nevada is jointly operated by Tesla and Panasonic [1]. That's in America. (No clue on the master lease bit. Would be curious for your source.)
[1] https://www.reuters.com/business/autos-transportation/panaso...