Engineer John Archibald Purves designed the Dynasphere as a vehicle inside one enormous rolling shell. His 1931 U.S. patent placed passengers and motor on a carrier running along an internal track; shifting that track sideways tilted the outer casing to steer. Prototypes were demonstrated in 1932 as a possible future of transportation.
A contemporary engineering account answered the obvious visibility problem by claiming the lattice bars would pass before the eyes so quickly that they would become invisible. Excellent news once moving. Less useful while starting, parking, or deciding whether the future contained a wall.
Sources: J. A. Purves, U.S. Patent 2,009,904; Institution of Engineering and Technology Archives.
Image: drawing from expired U.S. Patent 2,009,904, via Google Patents.