The Atlantic has a great overview of the history of mechanical horses.
A Brief History of Mechanical Horses [A Brief History of Mechanical Horses - Megan Garber - The Atlantic][www.theatlantic.com] [www.theatlantic.com]: http://www.theatlantic.com/technology/archive/2012/09/a-brief-history-of-mechanical-horses/262942/
Footage of GE's "Walking Truck," a four legged transport device operated by a technician inside the body. The Walking Truck climbs a stack of railroad ties, then kicks each tie off the pile. The Walking Truck gives a shove to a stuck jeep. The Walking Truck nudges a lightbulb without breaking it. [GE ca. 1965]
