LOL!  Dear One, My father worked on one technology that offers both free energy and gravity control.  He was very excited about His work, and would tell Us the results of the experiments They were doing.  He would say that in the future, cities would float, cars would fly, and We would have all the energy We could use.

Then one night He came home and told Us He could not talk about it anymore.   That "They want it secret for now."

That was in 1959 (yes, I am an old lady).  Since then, many approaches have been discovered, and the inventors have filed for patent.

That filing alerts the moneyed psychopaths in control on Our planet (by virtue of money) of tech that threatens Their single tool to power.  They will swoop in and "handle" things.  Buying out the patent (with perpetual non-disclosure in the agreement), or, if there is no sale, They will set the inventor up for blackmail, threaten the inventor and family, ruin Them (as They did Tesla), or just outright kill Them.

If You think They do not have free energy tech, You are not aware of all I have said, I guess.  There is no such thing as "perpetual motion."  Things wear out, but overunity?  Energy that is greater than the input required to draw it forth?  Free energy?  Absolutely there is.

Electrogravitics – My Knowledge of Free Energy  (article):  @amaterasusolar/electrogravitics-my-knowledge-of-free-energy

Way too many road blocks on the move.  Literally and figuratively.  And I would be humbled by any gift You would choose to give!