I think the people in charge of the license bureau in Ohio think like about half of the people in the country, that a “hybrid” needs to be plugged in to charge the high-voltage batteries.
The gasoline engine is used to charge the batteries in a hybrid electric vehicle. The word “hybrid” means that is has two sources of propulsion. It can be powered by the gasoline engine or by an electric motor or a combination of the two. There is no need to plug in the vehicle into an electrical outlet.