[Olog-hai]

I was looking at images of the HY4. It looks like two gliders welded together, with the engine in between.

[wastoute]

So, including the power used to make the hydrogen, I would bet that in regard to carbon emission and cost they would have come out ahead buying First Class tickets on a 747.

Libtards love re inventing things that look like wheels with square corners. They think it is Art.