Footsteps now could contribute to the powering of the world

The World Beyond Cars - speculative fiction: Last Morning: "Bellingham got up early. He never failed to notice the play in the surface below his feet when he got up in the morning. Footsteps now could contribute to the powering of the world. Each step he took on the thin surface - what was once the floor but which was now all sides of all spaces - activated tiny sensors that cumulatively created energy. Outside on the walkway the same play existed. The strength of the surface exceeded that of what used to be called walls. Soundproof. Fireproof. Replaceable. They came from a plant that once made automobiles."

Charles Sanders Peirce - Thinking in Threes