The 1956 Simplex Automatic motorcycle was a lightweight machine that could return 100 mpg. The main reasons for the high fuel economy were the overall light weight and efficient design of the bike. See pictures and learn about the Simplex Automatic.
The 1913 Excelsior 7-C motorcycle was designed by the Schwinn Bicycle Company, which built motorcycles until 1931. Despite the added speed potential, the Excelsior still relied on a simple rear coaster brake. Check out pictures and a profile.