These guys (and gals, no doubt) are a LONG way from the traditional mad scientist zealot flailing at the keyboard in his mother's basement. This is a significant engineering effort that seems to be taken seriously by DoD, AND has Toyota and Uber on board. I am not ready to dismiss anything they are doing in any way. Unlike the usual aviation dreamer, I feel certain this lot will be selling and flying man carrying craft in the foreseeable future. As most know: I am the ultimate anti-Lithium guy and think almost anything going down that road is disgusting, but this is one I am willing to give a bit of a break to. I envy them and must congratulate them in making the resources available to do such an ambitious project.