Gigafactory is a joint venture between Panasonic and Tesla. But either way, in a world where demand for batteries far outstrips supply, the contractual ability

Gigafactory is a joint venture between Panasonic and Tesla. But either way, in a world where demand for batteries far outstrips supply, the contractual ability to buy a greater quantity — knowing they can be sold profitably in any form factor — is an asset. Underpurchasing would be squandering that asset.