The John Searl Inverse Gravity Vehicle using a magnetic spatial effects generator or SEG for anti gravity propulsion in 1946.
Multiple test flights done during the 1960’s thru the 1970’s. A Dr. Kaine from nasa stated that the vehicle could reach the moon in 9 hours and mars in two months. Ultimately all propulsion technologies have been kept under wraps since the 70’s except for the seg, which uses perpetual motion to create electricity. Video originally posted byamericanantigravity. Their link is here