Can I Put Insurance On A Car I Don't Own? 
No you can not . In order to insure something you must have an insurable interest in the item . If you do not own the car , you do not have an insurable interest . You must be very careful about this sort of thing with property/casualty insurance as many carriers will issue a policy but deny the claim as they will do the official fact checking on ownership and insurable interest at time of claim . Premiums will be refunded and the contract rescinded . 