Bayliss-Thomas was an English automobile manufacturer that operated from 1922 to 1929. The company originated from Bayliss, Thomas & Co., which was established in Coventry in 1874 as a bicycle manufacturer under the name Excelsior. The company expanded into motorcycles in 1896, achieving notable success, including the production of the world's largest single-cylinder motorcycle engine in 1913, which had a displacement of 850cc. In April…