Picture a 20-foot, humpback-whale-shaped vehicle from 1933 that could spin on its own axis, park in a space six inches longer than itself, and was ultimately meant to fly. Buckminster Fuller's Dymaxion car captivated auto giants, then a fatal crash and a banking conspiracy erased it from history.

This deep dive explores the dangerous gap between visionary genius and present-day reality. We unpack the radical engineering, the tragic Chicago rollover, and the real reason this revolutionary machine never reached the assembly line, even after Walter Chrysler called it exactly the car he always wanted to build.

• Fuller designed the car as phase one of an Omni-Medium Transport, planning to use jet stilts that would not be invented for two more decades.
• The rear-engine, front-wheel-drive, three-wheeled design followed wheelbarrow ...