Dog-powered vehicle (1880)

The September 1933 issue of Popular Science magazine describes a vehicle that didn’t quite become popular:

A French engineer designed an apparatus called a Cynosphere. It was a tricycle with a small steering wheel in front and two large and curious wheels behind. Each of the rear wheels was shaped like a circular cage and contained a large dog. These “power-plants” rolled the carriage ahead by running squirrel-fashion on narrow tracks. The operator sat in a sulky seat between the wheels and could throw the motors into “high” by exhibiting food or even a cat on special occasions. Whenever the dogs became tired, the engineer pointed out, the operator could change engines by replacing them with other animals.

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