This is Robosaur, Robosaur was my first robot that could move around. Basicly it was a primative rover. Now I can make ones that are a lot better using only one RCX, but at the time I could only build it using a second RCX. Also in order to turn it had to wag its tail, this gave it enough push to force its self to turn. While this robot is not very good, I still like it because it was my first one that worked.