In other words, if you can a) create a room temperature superconductor capable of storing an incredibly high amount of energy and b) get the energy field created by that superconductor moving at incredibly high speeds around or within the craft, you can create a polarized energy vacuum around it which allows it to basically ignore the energy of the air or water around it, thereby removing its own inertia and mass from the equation.Big deal. Cats figured this out a long time ago (well, not the "water" part perhaps).
What!
Haven't seen a cat hit the water?
They definitely remove all mass and inertia from the equation.
Something like that was postulated as to why UFO photos are always fuzzy - the air surrounding the vehicle is ionized.