Passive walking robot.

The powered cart moves the toy forward and the passive legs move do too their linkage to each other and the side-to-side tipping of the cart due to the offset wheels.

Short Demo video. https://youtu.be/1ZPFZXeTdhM

Full Demo video https://youtu.be/B53ROxLXwH4

Short non powered ramp walking version video.
https://youtu.be/l98Gxc2MlMw

Short video of pull string version of passive cart walking robot.
https://youtu.be/ABbSXoTLWPU

and passive leg build video . https://youtu.be/WZ6N1w4rJ7Q