nazi started in 1922, few prototype models were made then..amazed that they have started 90 years ago?
the quest for levitation in fact started during ancient times...ancient egypt and stonehenge.
ed leedskalnin did the coral castle single handedlly ! did he knows the key secret to levitation?
however some said these technologies were then transferred in secrecy when the nazi scientists were shipped to US through operation paperclip.
the 'krauts' re well known for their precise engineering...till today.