Musk's time with DOGE is coming to an end - or at least will be massively dialled back. But the fact is that the exercise, which promised so much, seems to have ended up a failure on every measure. It failed to save the government money - indeed, it may have cost more than it saved. It failed to make government more efficient. It may have made government systems vulnerable to data theft, not least from Elon himself. And it has been a personal disaster for Musk and for the businesses he's associated with. For one last time - let's take stock of how a formerly inspirational role model turned into a car-crash cautionary tale for the future.