Experimental vehicles

SpaceShipOne is an experimental air-launched rocket-powered aircraft with sub-orbital spaceflight capability at speeds of up to / using a hybrid rocket motor. The design features a unique "feathering" atmospheric reentry system where the rear half of the wing and the twin tail booms folds 70 degrees upward along a hinge running the length of the wing; this increases drag while retaining stability. SpaceShipOne completed the first crewed private spaceflight in 2004. That same year, it won the US$10 million Ansari X Prize and was immediately retired from active service. Its mother ship was name

The Scaled Composites Model 339 SpaceShipTwo (SS2) is a retired air-launched suborbital spaceplane type designed for space tourism. It was manufactured by The Spaceship Company, a California-based company owned by Virgin Galactic.

Slovakian roadable aircraft

automobiles powered by gas turbine engines

world's first motorbike powered by an internal combustion engine and petrol (1885)

vehicle intended to facilitate transport in Antarctica

steam powered velocipede

planned suborbital, air-launched spaceplane

seaplane that can dive underwater

electric race car

steam-powered velocipede

Japanese electric multiple unit train type

300px|thumb|Trebelev subterrene (Soviet Union) A subterrene (, ) is a vehicle that travels underground (through solid rock or soil) much as a submarine travels underwater, either by mechanical drilling, or by melting its way forward. Subterrenes existed first in fiction as mechanical drillers, with real-world thermal designs and examples following in the second half of the 20th century.

Japanese experimental train type