A system is disclosed for an electrical generator system for a vehicle. The system includes a wind turbine, an electrical generator mechanically connected to the wind turbine and configured to connect to an electrical energy storage device that is configured to store electrical energy on-board the vehicle, and a rigid, conical housing, forming an interior chamber, the housing having an inlet end and an outlet end, the inlet end having a larger diameter than the outlet end, and the conical housing configured to direct wind flow into the wind turbine.