Corona Fahrradwerke und Metallindustrie AG was a German automotive manufacturer based in Brandenburg/Havel, active from 1904 to 1909. The company initially focused on bicycle production before expanding into motorcycles in 1903 and subsequently entering the automobile market in 1904. The first vehicle produced by Corona was the Coronamobil, a three-wheeled car featuring a single front wheel and powered by a single-cylinder Fafnir engine. This…