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William Powell "Bill" Lear (June 26, 1902 - May 14, 1978) was an American inventor and businessman. He is best known for founding the Lear Jet Corporation, a manufacturer of business jets. He also invented the first car radio and developed the 8-track cartridge, an audio tape system which was widely used in the 1960s and 1970s. He founded Lear Developments, a company specializing in aerospace instruments and electronics. He developed radio direction finders, autopilots, and the first fully automatic aircraft landing system. He had a reputation of being difficult, but he reportedly had a notable sense of humor. He died of leukemia in 1978. His remains were cremated and scattered at sea.