This is a new theory. Elon Musk said the 9000 ton IDRA Gigapress is for the Cybertruck body, in other words the structural frame underneath the exterior stainless steel panels. Before it was thought that the 8000 ton Gigapress would be for the Cybertruck’s “skateboard” – front, rear and structural battery pack. The 9000 ton is not for this, it’s in addition to the skateboard, in other words the upper part of the CT. At least that’s what I’m gathering from the article.
Elon Musk: IDRA Group’s 9,000-Ton Giga Casting Machine Is For Tesla Cybertruck Unibody