The AMC Pacer is a two-door compact automobile that was produced in the United States by the American Motors Corporation between 1975 and 1980. Design work began in 1971. The rounded shape and large glass area were unusual compared with the three-box designs of the era. The Pacer's width is equal to full-sized domestic vehicles at the time, and this unique design feature was promoted by AMC as "the first wide small car." The Pacer was the first modern mass-produced, U.S. automobile design using the cab forward concept.