I can see the mechanism of power transmission! <br> Fuel cell moving with power generation with magnesium, salt water and air When setting the fuel cell in the cockpit of the arch body, <br> Rotate the front and rear large diameter tires and fans and start running lightly. <br> With magnesium sheet used for fuel cell, we will run about 3 hours with 1 sheet when we use it for about 15 minutes with one power generation <br>