The lack of model years has been a defining feature of the S & X. Incremental updates, rolled into the product as they are ready has done wonders for improving the quality of the S, and are working quickly to improve the troublesome X. On top of manufacturing improvements, major outward facing features also pop up 2-3 times a year. This is all well and good for a what in the grand scheme of things, are currently small volume products. Will this hold up for the 3? Mass producing 500,000 vehicles a year, it's like a supertanker steaming full speed ahead. At that volume, change can't happen so fast. Elon mentioned that "pencils are down" in 6 weeks for the initial release of the 3, and any other features after will be coming in the 2nd or 3rd version. This begs the question: Will the 3 have a more set update schedule, or will the changes appear at any time as they do today on existing lines? Even updating twice a year would still be lightning faster then what we see from existing players. I get the 3 is designed from the start for mass production, but changing a part and ordering 500,000 new ones can't happen overnight. I don't know how hard it is to make rapid changes to a complex product in volume (500,000+) production. Anyone with massive manufacturing experience want to weigh in on the challenges of doing this at this scale?