Any county mutual insurance company may make insurance contracts against loss, expense, or liability by reason of bodily injury or death by accident, disability, sickness, or disease suffered by others for which the insured may be liable or may have assumed liability, except no liability insurance contracts against any or all loss or expense resulting from the ownership, maintenance, or use of any motor vehicle normally operated, intended to be operated, or designed for use, upon any highway, road, or street in this state, may be made.