re: re:The situation is….
Hypothetical of course, I have no way of constructing such machines. (at this moment in time. :-)
The question was simply to point out how difficult it would be to convince anyone that you have taken a ride in an unusual craft, unless the whole world was there to see it through news reports or documented evidence, or regular flights to anyone that wanted to go for a ride.
In other words those that have not experienced it will not believe that it is possible.
That does not mean that people who say that they have experienced such things are lying, certainly it is possible that they are lying, but it also is possible that they are telling the truth.