So, Giga Berlin ready to go live, like Austin will for the Model Y in a couple three months. This pic shows all the stamped metal in the body of the car. Note the lack of any structural stuff. The entire bottom end is composed of the structural battery pack, which is the "floorpan" to which the seats and other interior things get mounted, and front and rear cast aluminum subframes. The less stamped metal you need, the fewer gargantuan stamping machines you need, and the fewer robots to weld all of that, and the fewer issues with alignment of things.