INTERESTING CONCEPT. Are you proposing the actual physical ships ARE real BUT they are not manned by physical 3d lifeforms. They are mearly drones that can somehow handle the vast travel of space and/or potential wormhole travel, however the beings themselves travel via astral, wave, energy, plasma? It actually does make alot of sense and one I will have to consider more. The "balls of light" seen leaving ufos are the beings themselves. Perhaps viewing the ship as the vessel which is controlled by the invisible software which is the "aliens". The aliens would survive any G force acting on the ships as they again are not phsyical beings, they have either transcended their phsyical form or somehow found a way to download their consciousness into a avatar like form seperate from their phsyical bodies (located potentially light years away). I tend to believe they no longer have a physical 3 dimensional form, or may have hundreds of thousands of years ago. Again all speculation and anyone who claims to have all the answers in this field is a liar... as the alien enigma represenst mankind's "unknowable/forbidden knowledge".