RetiredUnited StatesRemote-controlled

Walking Truck

Cybernetic Anthropomorphous Machine, CAM

A four-legged hydraulic walking machine designed by Ralph Mosher at GE, steered by a rider whose arm and leg movements drove the four legs. It was tiring to operate and never went past the prototype stage.

Price: —Not published
Height: —Not published
Weight: 1400 kgHeavier than 80%
Payload: —Not published
Speed: 8.0 km/hFaster than 74%
Battery: —Not published

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Why it matters

One of the first walking machines to give its driver force feedback, so the operator could feel the legs meet the ground.

Real-world use

Only one prototype was built for the US Army; it survives at the US Army Transportation Museum, Fort Eustis, Virginia.

Timeline

First shown: 1969
Released: Not yet

GE's ambulating quadruped transporter completed and successfully tested

Maker

General ElectricCompany · United States

How it stacks up

Against other legged & novel that publish the figure. Pick a measure.

Walking Truck (Cybernetic Anthropomorphous Machine, CAM) is heavier than 80% of the 25 other legged & novel that publish a weight. Bars show the 7 closest in date.

Weight 1400 kg 0.0 kg13000 kg #6 of 26 · heavier than 80%

Not published by the maker: height, payload, joints, battery, price.

Public attention

A historic robot: no longer sold or in use, so it is not ranked against current machines.

1,560 views of its Wikipedia article in the last 90 days (Walking Truck)
No recent press stories listed yet

Measures how much people read and write about a robot, not how good it is. Measured 2026-10-13; same method for every robot. How it is measured

What’s inside

The parts the company has talked about publicly.

Movement: Walks on legs
How it runs: Remote-controlled. A seated operator controlled the four legs with arm and leg movements through hydraulic servos that reflected forces back to the controls.
Actuators & motors: Hydraulic legs and body moved entirely by hydraulics; fluid and pressure supplied by an off-board system.
Hands: None; four legs controlled by the operator's own arms and legs.
Sensors & vision: Force feedback to the operator's hands and feet (one of the first machines to use it).
Compute: None; the operator's limb movements were coupled to hydraulic valves.
Other details: About 1,400 kg (3,000 lb); up to about 8 km/h. Operators could only drive it for short periods because it was so tiring. Designed and driven by Ralph Mosher.

From the maker

Walking Truck (Cybernetic Anthropomorphous Machine, CAM) is the only machine from General Electric in the atlas.

Made, sold and where

Unit counts are usually company figures; analysts often disagree.

Price: Not published
How to get one: No official buying page found
Built: One prototype
Sold or delivered: not sold
Where it is sold or used: United States (General Electric)
Customers and pilots: Built for the US Army; the prototype is displayed at the US Army Transportation Museum, Fort Eustis, Virginia

Sources

Figures come from press coverage. Every link below backs something on this page.

U.S. National Archives Bringing Sci-Fi to Life: The Walking War Machines of ARPA and G.E. ntrs.nasa.gov Walking Truck (Cybernetic Anthropomorphous Machine, CAM): how it is operated

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