As the technology of vertical take off and landing (VTOL) cargo drones are moving towards replacing the old delivery systems all over the world.more and more companies are working towards building their own cargo drone fleets in order to improve their shipping capabilities.But even while using current latest technologies in aerodynamics a few main problems still prevent this transition from ‘taking off'.Three main problems constantly occupy the minds of UAV designers: Flight range, Carrying capacity, and Reliability.Lowental Hybrid has taken on the mission to solve these problems by introducing the new technology of the Parallel Hybrid Engine. While most cargo drones these days are operating solely on electric powered engines, Lowental Parallel Hybrid Engine combines the benefits of both Electric and Combustion propulsion systems. This revolutionary engine allows vertical take off using electricity, then switching to Combustion propulsion for cruising, and back to electric power for landing.Combining the advantages of each propulsion system allows the aircraft to reach maximum efficiency, extending the time and flight distance by 400% and doubling the carrying capacity.Also in case of a power system failure the engine can easily switch to the other form of propulsion providing the drone's safe arrival to its destination.Lowental Parallel Hybrid Engine is patent pending and one of a kind system that can launch the next worldwide revolution of cargo drones.