Cadillac Series 370Bs for Sale For 1932, General Motors brought out the new Cadillac Series 370B with improvements made over the previous model year. The V12-powered luxury car got a new flared radiator shell and restyled fenders and running boards that made this classic car look sleeker and cooler. Thanks to the onset of the Great Depression, production of the Cadillac Series 370B was a mere 1,700 units. This means that for the collector, this is a difficult car to find, but also a rewarding one to have. With a long list of classifieds, you should be able to find it on FossilCars.