When the seat rotates tooSourced
The giant-wheel vehicle had an awkward motion problem
The 1930s Dynasphere put its driver inside a giant rolling wheel. Steering and braking proved difficult, and acceleration or braking could make the independent driver housing spin inside the structure, a problem called gerbiling. Forward motion did not solve all the design questions.
It mattered which part of the vehicle kept turning.
Summary / translation: Unbubly · CC BY-SA 4.0
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Dynasphere (vehicle) · Wikimedia contributors
Adapted, summarized and translated from the source. Adapted text is also available under CC BY-SA 4.0.
Reviewed: 2026-10-05