1st September 1931: Swiss engineer M Gerder at Arles, France on his way to Spain in his 'Motorwheel', a motorcycle with a wheel which runs on a rail placed inside a solid rubber tyre. (Photo by Fox Photos/Getty Images)
1st September 1931: Swiss engineer M Gerder at Arles, France on his way to Spain in his 'Motorwheel', a motorcycle with a wheel which runs on a rail placed inside a solid rubber tyre. (Photo by Fox Photos/Getty Images)