Let the hive mind of Engadget get that for you.
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a) The tracks would need to be some really soft rubber for them to do such a tight corners in the triangle "wheels". That would mean that they would wear very fast and be pretty useless fast. I have no idea what the yellow things are, but I can see no function in them at all.
b) Why on earth it has turning front "wheels"? Why no just do as the tanks do: alter the speed and direction of rotation the tracks and the vehicle would turn. The current setup would, especially in high speed, be problematic as in turn the forces pushing the car forward would easily push the tracks off the "wheel".
c) the vehicle isn't structurally sound. c1) The "wheels" don't seem to be properly attached to the chassis. c2) there's no space for (tubular) frame to hold the body work up.