There are a lot of different things one can mean by that. that "structural pack" that elon has been talking about doesn't go live until the new Model Y chassis

There are a lot of different things one can mean by that. that "structural pack" that elon has been talking about doesn't go live until the new Model Y chassis starts being built, which is maybe today? The current level of tesla's battery/chassis integration is not any more sophisticated than everyone else that I can see.