Our desire to have fire performance in Chewbacchus superseded that rule, however nothing that rolls in the parade is fossil fuel-powered.
The NOFD actually informed us that, despite the exhaustive safety precautions taken in its construction (surpassing all local, state, and federal standards) that they would not allow it and would prevent us from ever parading again if we ever played with fire another time. So the Mechagator now breathes a cloud of CO2-frozen gas.