 With the exception of station wagons, the full-size cars of Buick, Oldsmobile, and Pontiac (along with most of the Cadillac model line) were downsized, becoming front-wheel drive, mid-size sedans.From 1986 to 1990, the sole sedans produced were the Chevrolet Caprice and Cadillac (Fleetwood) Brougham; the Buick Roadmaster sedan was introduced for 1992.Following the end of the 1996 model year, General Motors ended production of the B-platform.