classic motorcycle and harley davidson

American, Sylvester Howard Roper (1823-1896) invented a two-cylinder, steam-engine motorcycle (powered by coal) in 1867. This can be considered the first motorcycle, if you allow your description of a motorcycle to include a steam engine. Howard Roper also invented a steam engine car.German, Gottlieb Daimler invented the first gas-engined motorcycle in 1885, which was an engine attached to a