Phil posted details below, no need to "guess" any longer.
All I can say is, wow Phil, I'd like one in the Boston area, when you prove the concept.
I think this could be a game changer for the Leaf, and certainly make up for the lack of DC Fast chargers in most of the country, a few dozen of these scattered in major US cities would make a huge difference until the "actual" DC fast chargers could be deployed, and as we can see, thats not going all that quickly even on the West coast, never mind the East coast and the rest of the country.
Thanks for your pioneering work and vision, perhaps you can partner up with someone when you are ready to mfr and produce these, someone with deep pockets of course, this is way beyond what a normal "hobbyist" or "enthusiast" would come up with.