Okay, none of those guys are as cool as Al Hazeen. This is not a perpetual motion device, it is a golf cart and they only play by club house rules and the laws of thermal dynamics. It is a thermal accumulator, the paraffin wax, when it changes phases from 51°c to 50°c, makes 176kj/kg of latent heat available to be discharged very quickly. It is a deltaT rather than a deltaV, like in lithium. Please, please, please, don't cool a data center with this technology. It is too much copper and you are going to make a derecho.