An amphibious vehicle (or simply amphibian), is a vehicle or craft, that is a means of transport, viable on land as well as on water.
This definition applies to ATVs, cars, buses, trucks, RVs, and military vehicles, all the way to the very largest hovercraft. Ground effect vehicles, such as Ekranoplans are generally not considered amphibious vehicles.
Nicely restored DUKW
Duke W. Aalsmeerderbrug, Holland 2008.
Editor: this is a GMC built 6 wheeler amphibious truck DUK...
SSB M2-B Alligator
SSB M2-B Alligator at Technikmuseum Sinsheim, Germany 2009.
See also next pictures:
GAZ 46 light four-wheel drive amphibious military vehicle at the 'Auto & Technik museum Sinsheim', G...