GRA said:I agree wityh you that there would be a cost issue, however, I;m not so sure that energy density would be as big a big deal given rapid refueling. Although it's always nice to have, you don't need as much range if you can be on your way again in 3-5 minutes. I suspect 2 hours of freeway range would be acceptable to most people other than real road warriors.
It's not acceptable to the general public, let alone road warriors. Less than 200 miles of range is not acceptable, especially when it drops even further in bad weather. Not to mention building the "filling" infrastructure would be much more complicated than installing high power chargers, and the added expense of keeping large bins of these "footballs" in stock to be available for use.
Whether such batteries could do that with acceptable weight/volume, I have no idea.
They can't. The best pack systems today can barely do it with superior weight/volume compared to these footballs.