GAP is sold by auto dealers and other lenders. It is usually an
insurance product (but not always) designed to pay the difference between a car's
outstanding loan balance and the actual cash value (ACV) if the car is
totalled (total loss) or stolen and not recovered. Looking for
nationwide statistics or estimates of how may policies are sold each
year and total premiums written; and the average retail price to the
borrower, average wholesale prices from insurance company to the
lender, etc.