You may be right. But there's nothing wrong with it. Tesla has done amazing things, and so has SpaceX. Yes, they're in the habit of being late. But neither has,

You may be right. But there's nothing wrong with it. Tesla has done amazing things, and so has SpaceX. Yes, they're in the habit of being late. But neither has, as far as I can remember, ever produced "vapourware" they didn't eventually start selling. For a nice reference: see this comment sceptical of Tesla's capability to deliver this 100MW battery in Australia in 100 days. Which was just recently completed on time. The tone reads surprisingly similar to the Bloomberg article ("To say nothing of the near 50 degree weather beating down on old infrastructre that spans thousands of very sparse kilometers.") https://news.ycombinator.com/item?id=13838355 https://news.ycombinator.com/item?id=13838355 People, and companies, have reputations. Those have to be taken into account when judging their claims. Note also that all of the claims of the article are in the "this is hard" territory, not any actual "this is perpetual motion" sort of impossibility as the title alludes to. The example that seems easiest to judge is doubling the capacity of the roadster battery: The current Model S battery is a rather thin sheet underneath the car. I have absolutely no doubt that you can fit twice the volume into the same frame. It gets only easier if there are any advances in battery density, or if car grows only slightly in every dimension.