The 4680 is rapidly approaching the point where it is the most competitive cell. So, when you consider the fully landed -- the cost of a battery pack fully landed in the U.S., net of incentives and duties, 4680 is tracking to be the most competitive, maybe lower cost per kilowatt hour, fully considered than any other alternative, which is -- we're not quite there yet but we're close to being there, which I think is extremely exciting. And we've got several -- a lot of ideas to go well beyond that. So, I think there's -- if we execute well, the 4680 -- we'll have the -- the Tesla internally produced cell will be the most cost competitive cell in North America, a testament to the tremendous amount of hard work there done by the team.