I find the story very inspiring, but as some others noted, it would be nice to see a working model of the unit, or at least some pictures. Now on a more substa

I find the story very inspiring, but as some others noted, it would be nice to see a working model of the unit, or at least some pictures. Now on a more substantial level, the claims of "60% efficiency" and "on part with coal" claims are interesting and need a little more explanation, in my opinion. How are these numbers being calculated? We aren't told. One might guess it's based on a bunch of manufacturing and startup costs, along with operating costs, for an unknown number of years (probably many) along with projections about various other future costs. What power levels will a prototype produce, and how will it be scaled up? I think the concept sounds promising, but a lot of questions remain to be answered.