Metropolis

The M-Machine, and Rotwang's Maschinenmensch.

Workers below move in shifts, bodies synchronised to machinery they do not own. Above, the owners' children run races and stroll in the Eternal Gardens. Two entirely separate days, stacked vertically.

Capital captures it — Nothing is abolished. The gains are simply owned by someone.

Sets the template every later work inherits — including the Eloi-and-Morlock geometry of who is above and who is below.