Although travel at superluminal speeds is yet to be accomplished by modern scientists, it does explain how Santa manages to travel the world in a single night. Traveling faster than the speed of light is a real scientific concept.
Albert Einstein concluded that mass is energy in a super-concentrated form. If one could convert matter into energy, it would create an immense source of power. Although nobody will ever truly know how Santa operates, it is speculated that he could have mastered the power of anti-matter, which is what NASA is attempting to do in order to build a spaceship that can travel faster than the speed of light.