sensor between the rear axle and body and an on-board air compressor. Most visibly, a pair of electric fans offset to the left under the hood was replaced by the combination of one conventional fan-driven mechanically from the engine alongside one electric fan. GM discontinued the Roadmaster Estate in 1996, ending production on December 13 of that year, which was the last full-sized American station wagon tradition for the industry. All 1996 Roadmaster Estates were installed with a "Collectors Edition" hood ornament, a round medallion in place of the traditional tri-shield Buick badge. Notes Sources Flory, J. "Kelly", Jr. American Cars 1960–1972. Jefferson, NC: McFarland & Coy, 2004. Estate Rear-wheel-drive vehicles Station wagons 1970s cars 1980s cars 1990s cars Cars introduced in 1970 Motor vehicles manufactured in the United States