[DMetalKong]

I'm looking at this and I am curious as to how you plan on powering the wheels. I realize its a rough sketch, but given the amount of joints it looks like you would need a rather complex system to transfer power around the hinges. Assuming that you were planning on using chains, you would need at least two separate spans to get to one side, as far as i can see, and the space for running them looks tight. One last thought, did you consider how bumpers could be mounted?