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  1. List of features that I would like to opt out

    If you want the bearings to break the glass so you can get out in an emergency, they had better be giga-bearings. Because the regular baseball sized bearing Franz used failed to break the window open. It just cracked it and bounced off!
  2. What do you all think of the minimalist approach to the Cybertruck?

    You're in luck. Because just about every other truck out there suits your preferences better. That's a lot of trucks to pick from!
  3. EV sales have doubled. Is a ‘tidal wave’ coming?

    What we learned is that the garage/storage/workshop building that you are using as an example is not particularly well insulated and you have done the calculations for weather that that is far from average for zone 3. Remember, my comment was not about heating a home through the middle of winter...
  4. EV sales have doubled. Is a ‘tidal wave’ coming?

    Wrong. The heating values you supplied are the same figures used to determine the required furnace capacity per sq. ft. in Zone 3. When sizing a furnace, the coldest expected weather is assumed and it's over-specified about 10 percent to ensure the furnace doesn't struggle to bring a cold house...
  5. EV sales have doubled. Is a ‘tidal wave’ coming?

    You can use whatever kind of unfavorable assumptions you want to make it sound sketchy but 40 BTU/h/sq. ft. would not be considered "well insulated and non-drafty" on a typical heating day. Your error is not fully understanding how the recommended number of BTU's per sq. ft. relates to actual...
  6. EV sales have doubled. Is a ‘tidal wave’ coming?

    With a well insulated, non-drafty house of a normal size, I think you would be surprised just how much heat 4 or 5 Powerwalls could provide using an efficient heat pump, especially if only the occupied rooms were fully heated. Suitably sized solar would only extend the length of total power...
  7. How can it be so affordable?

    Yes! Eventually. And you highlight the primary advantage of the 4680 form factor is a lower cost of production. And not to get too far into the weeds but, while there are heat transfer benefits of the tabless design and slightly less heat generation, the larger size of the 4680 largely negates...
  8. EV sales have doubled. Is a ‘tidal wave’ coming?

    Like most complex problems, the answer is a blend of solutions. In an ideal world every house in every climate would be 100% passively heated/cooled. But we know that's not practical, we will always need some form of supplemental heating/cooling in most climates and the goal should be a blend of...
  9. EV sales have doubled. Is a ‘tidal wave’ coming?

    He didn't say grid capacity would need to double, he said the electricity generated would need to double if every household added two BEVs. Current electrical generation is a small fraction of total generation capacity (which is a fraction of grid capacity). You are confusing grid capacity with...
  10. Cybertruck: Light-Duty or Heavy-Duty?

    For any given vehicle, that could be considered mostly true. But the tow ratings cannot ignore stability. Americans are actually pretty far behind the curve when it comes to towing technology and know-how. If you look at a F-250 and how stability problems are initiated, yes, you can cover sway...
  11. EV sales have doubled. Is a ‘tidal wave’ coming?

    The theoretical maximum is 35 but you're not going to see anything close to that in the real world. The most efficient systems I'm aware of that are currently available start peaking somewhere above 5 using ground source loops in advantageous situations so the results are dependent upon local...
  12. Cybertruck: Light-Duty or Heavy-Duty?

    The Cybertruck can easily be under 6000 lbs. curb weight and still have 3500 lbs. cargo capacity and be a class 2b truck. But if the 6000 lbs. you speak of is GVWR, then even the wimpiest F-150 must pay the extra $600/year in CA DMV fee. I'm not familiar with licensing vehicles in CA so I don't...
  13. Cybertruck: Light-Duty or Heavy-Duty?

    I didn't intend to create the impression I think the 2170 might be in the Cybertruck. I'm confident all Cybertrucks will use the 4680 cells but one possibility is that the chemistry could differ between versions.
  14. How can it be so affordable?

    No, the overall charge rate of the 4680 is roughly the same as the smaller cells due to the need to remove more internal heat. The size of the 4680 cell was chosen to maximize cost efficiencies of the manufacture of the cells and the assembly into battery packs, not to increase charging speed...
  15. How can it be so affordable?

    Crissa didn't say it as precisely or accurately as possible because the bulk of the heat is not generated in the tab itself but via the electrons moving positions within the cell as it is charged and discharged. Other than that, her explanation is what you need to pay attention to. But I love...
  16. EV sales have doubled. Is a ‘tidal wave’ coming?

    Your analysis exposes the fundemental flaw in your reasoning when you suggest that a 30% increase in electrical consumption requires a grid with 30% more capacity. That's not how grids work because you have to account for the time of use. The current grid is operated on a daily basis of around...
  17. EV sales have doubled. Is a ‘tidal wave’ coming?

    While I agree that distributed systems are the best solution, and also the way things are moving, the distributed assets don't necessarily need to be owned at the individual level. In some cases that makes sense, but not in all cases. For example, it makes sense to have roof-top solar (but not...
  18. EV sales have doubled. Is a ‘tidal wave’ coming?

    Installing charging solutions is not going to slow the transition to EV's down. It only takes a few weeks lead time to upgrade an electrical system (including turning a 100 amp service into a 200 amp service). But new homes all come with 200 amp service (high-end homes sometimes come with more)...
  19. Cybertruck: Light-Duty or Heavy-Duty?

    Agreed. It will haul and tow closer to a 3/4 ton truck and it will weigh closer to 1/2 ton trucks and drive closer to a sports car than a truck. More function, less weight. Obviously. But the weight differences might not be directly proportional to the kWh of the packs. There is something...
  20. How can it be so affordable?

    I'm not sure he said "at consumer pricing". What he did indicate is he thought the market price of FSD cars would be considerably more expensive and that if you wanted the lower pricing you had a finite amount of time to get it. Naturally, as supply caught up with demand and others develop FSD...
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