While there are reasons to be skeptical it is worth noting that this effort is carried out in the south of Germany which is where there is a cluster of high tec

While there are reasons to be skeptical it is worth noting that this effort is carried out in the south of Germany which is where there is a cluster of high tech resources within driving distance <2h - BMW - Mercedes - Audi - Porsche - Airbus suppliers - Military aerospace companies - Key tech universities (Munich, Stuttgart) including aerospace oriented engineering - World class glider manufacturer Schempp-Hirth