An 'antigravity' propulsion system was proposed at the Space Technology and Applications International Forum (STAIF) in Albuquerque on Febuary 14 by
Dr. Franklin Felber. His new exact solution to Einstein's gravitational field equation gives hope to space enthusiasts that it might be possible to
accelerate space craft to speeds approaching that of light without crushing the contents of the craft. If it works, it could be even better than
apergy, as described by science fiction writer Percy Greg in 1880

www.space.com...
well more and more we are seeing claims of anti gravity propulsion and other high speed propulsion systems.
hopefully one of they leads to something.