The OTC-X1 which was built in the 50\'s/60\'s and could teleport but not fly. It got taken by the government. One of the engineers (Ralph Ring) who claims to have built it is still alive.
Nazi disc allegedly built. Known as the 'Flugkreisel'. First took off on 14 February 1945 and managed to climb to 12,400 m (40,700 ft) and attained a speed of 2,200 km/h (1,400 mph) in level flight in just 3 mins.