Battery energy density is doubling once every 10 years or so. Indeed not on the level of semiconductors & Moore's law, but nothing else really is. JB's Battery Romance The real question is: how does the battery/EV improvement curve compare with historic and future gasoline/ICE trending? The Roadster was designed 10+ years ago (went on sale in '08). So the Model 3 batteries are already ~2x as good as they were. And significantly cheaper per KWh to boot. In another decade (2028), we'll have packs 4x as good as the Roadster was and twice what that Model 3 has. That allows for either more range, less cost, or both. A Model V with a 400 mile pack with a part cost half of what we have today sounds pretty good. Here we disagree. As does JB who is targeting 10 minute charge times. While I've argued on this forum that we need more range, not just faster superchargers, the reality is we need both if we are to have "no compromises" EV's.