The Dynasphere was a creation by Dr. J. A. Purves in England and is shown above on the cover of Meccano magazine in February of 1935. The design actually originates from a bicycle type of monowheel, as they are called, which was built in the late 1860s. There were earlier motor powered monowheels and we will post one soon. Learn more @ http://theoldmotor.com/?p=11667