Oh, and all of those who think that this project is some new 'thinking outside of the box' consider this;
On July 7,
1981, the "Solar Challenger" aircraft flew 163 miles from Paris to England with pilot Stephen Ptacek at the controls. (5 hours and 23 minutes)
Solar Challenger - Wikipedia, the free encyclopedia
So excuse me if I don't jump up and down at the great intentions of the Swiss & Germans and how much money they want to spend for an anomaly flight.
btw, has their slow plane even gone as far as the Solar Challenger did almost three decades ago?