Musk: Tesla is highly vertically integrated, which makes it challenging. We build for instance the entire drive train, the traction battery, charger. For the engine we get copper and steel - out comes a finished electric motor. We also build the entire body, which is unfortunately more complex than I want it.I would therefore like to change the design later this year and thus make the production more efficient overall.
mm: First of all, you have to be investing again in new tools and machines. That does not sound efficiency. Why, then, the concept of change again?
Musk: Our Model S is still too heavy, despite all the efforts to save weight. We set, for example, to connect many techniques: more welding methods, different bolts, different types of rivets. Especially the B-pillar is ridiculous expensive and difficult because we had to be retrofitted to meet the Topbewertung in the crash test. This is anything but good design!