If you look at the credits, you'll find "Cars provided by Chrysler Corp". The big 3 had stables of cars which were lent to the studios for the featured car scenes. Cheap advertising! Of course the lending studio supplied other brands also, and these were the ones that were wrecked, usually. Don't know if the pratice is still in use, but there is many "Product placements" in special scenes. You know they paid if the brand name is prominently displayed. See ya in Battle Creek, Ray Jones