My father actually bought quite a bit of "Cargolifter AG" stocks. Obviously they are worthless now. The guy that founded CargoLifter (Carl-Heinrich von Gablenz)

My father actually bought quite a bit of "Cargolifter AG" stocks. Obviously they are worthless now. The guy that founded CargoLifter (Carl-Heinrich von Gablenz) is still at it and his "new" company "CL CargoLifter GmbH & Co. KGaA" actually manufacture balloon cranes much smaller than the original CargoLifter design.