Remus
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Well... not quite yet, but they are working on it.
A unique three-legged robot called "STriDER" is under development at Virginia Tech University. It's name stands for (Self-excited Tripedal Dynamic Experimental Robot. This cunning four-foot tall stick-figure bot has a totally unique way of walking. One researcher described it as being like "a biped with a walking stick."
The STriDER robot is able to change direction by selecting which of its legs to swing through. Two of its legs stand still, and the small body swings underneath and plants the third leg. The robot repeats the process to move forward, swinging this way and that

A unique three-legged robot called "STriDER" is under development at Virginia Tech University. It's name stands for (Self-excited Tripedal Dynamic Experimental Robot. This cunning four-foot tall stick-figure bot has a totally unique way of walking. One researcher described it as being like "a biped with a walking stick."
The STriDER robot is able to change direction by selecting which of its legs to swing through. Two of its legs stand still, and the small body swings underneath and plants the third leg. The robot repeats the process to move forward, swinging this way and that
[STriDER] ?is a novel three-legged walking machine that exploits the concept of actuated passive dynamic locomotion to dynamically walk with high energy efficiency and minimal control. Unlike other passive dynamic walking machines, this unique tripedal locomotion robot is inherently stable with its tripod stance and can change directions while walking.?
