77Birdman, actually all you really need when storing your antique car for the winter, is Comprehensive. You don't need Full Coverage. If you can show the insurance company that the car is not stored in some storage facility bldg., that it is at your home under lock and key, they will give you a bit of a break. If you had a fire sprinkler system that is a plus, or even if a fire hydrant is close that helps. If you have PerMar or ADT or one of the protection services that is a plus too. Been thru all of this.
That will protect you. Just don't take the car out and drive it
Then you would be out of luck.