Dumper is a small vehicle often used to carry loads and material around, often on building sites.
Dumper with electric motor nowadays represents the better choice.
Hybrid vehicles like electric dumper have a conventional engine (gasoline or diesel) as well as a large battery and an electric motor, so that the wheels of the car are driven by both an internal combustion engine and an electric motor. There are various arrangements for these two motors.In the series hybrid car, the conventional engine is used only to generate electricity, which then goes through a wire to an electric motor that drives the wheels.