The crossword solution for the term 'Bygone Oldsmobile' is REO. REO stands for Ransom Eli Olds, who was an American automobile entrepreneur and founder of the Oldsmobile brand. He was one of the pioneers of the automotive industry and his company was the first to mass-produce cars on an assembly line. Oldsmobile was a popular brand in the early 20th century and was eventually acquired by General Motors in 1908.