Today's addition to my radiator badge collection. REO was the initials of Ransom E. Olds, the founder of Oldsmobile (1901). Olds was forced out of Oldsmobile in 1904 and started a new company he planned to call the R.E.Olds Motor Car Company. When threatened with a law suit, he decided to use his initials for the new car company. REO made cars from 1905-1954 and trucks until 1975. One of its most famous car models was the REO Speed Wagon (name later taken by the rock group).