[elif]

They already do chip design.

You could s/chip/battery/ and make the same incredulous statement 5 years ago

Or upholstery, or charging infrastructure, or casting equipment, etc.

Tesla had the capital to go as vertical as they want.

[njarboe]

Tesla doesn't makes their own casting equipment (yet?). They do custom order the largest presses built by Idra Group in Italy (owned by a Chinese company) though [1].

[1] https://en.wikipedia.org/wiki/Giga_Press