No. CCW is a felony-4 here, so you do need a permit (either Ohio or from a state with a reciprocity agreement)to carry in a vehicle without visiting misery upon yourself. Even if it's not "concealed" as such, a firearm, particularly a handgun, cannot be "ready at hand" or it's still considered concealed for purposes of the law. They really should have included that under the "improper transport" law, since a thing can't logically be in plain view and concealed at the same time. But since when does the law have to be sensible?