Teslas casting machines are just bought from Idra, are they not? If Toyota thought their self-developed casting processes (they do that for nearly a century and

Teslas casting machines are just bought from Idra, are they not? If Toyota thought their self-developed casting processes (they do that for nearly a century and had 2500 ton machines since the 1970s) are not competitive, they could simply order the same machine from Idra.