The Rhino Marsh Buggie
The Rhino was invented by E. Aghnides, naturalized American frem Greece, and he made a lot of money by his inventions and had Marmon Harrington build the Rhino… it took them 5 years. The front wheels weigh 1500 pounds each and are 6 feet tall, and are hollow rubber clad in aluminum. The hemisherical shape of the tires has a fascinating integral property… the deeper they sink into sand or mud, the more weight bearing surface they provide in contact, and the more traction they then have.
(via Just a Car Guy)