California Motor Bicycle, George Wyman

 Although Cannonball Baker made news in 1914 by crossing the continent in 11 days he was by no means the first. 
In 1903 George Wyman rode a 200cc California Motor bicycle from San Francisco to New York to be the first motor vehicle to make it across the continent. The road network was much less developed in those days so he followed railways for much of the way. The journey took 51 days.