One possibility: they have said on several occasions that it’s very difficult to change how a factory is working when it’s working flat out. And of course, with

One possibility: they have said on several occasions that it’s very difficult to change how a factory is working when it’s working flat out. And of course, with the huge pressure on Tesla to deliver the numbers, they can’t afford to slow down or have outages for days or weeks while they change the production line. As a result, meaningful changes or innovations seem to be limited to the design/opening of new factories.