I suppose those nice curves at the front will help it slide along those narrow bush tracks, just gently slicing through the overhanging branches as they get pushed gently aside.
And the curvy under-hang at the front will let it get up on a plane, like a speed boat, as it surfs across those deep creeks, and let less water come up into the engine bay. ( That slot at the bottom will need to be fibreglassed over though.)
Maybe I will have one after all in my Xmas stocking! I wonder if its got airconditioning or maybe even a heater. They would help the sales figures!