Sites relating to general purpose vehicles (trucks, amphibious transports, personal vehicles etc).
Sites concerning armoured fighting vehicles (MBTs, APCs etc) should be submitted to http://dmoz.org/Society/Military/Weapons/Armoured_Fighting_Vehicles
.
Commercially-oriented sites offering specific products should be submitted to http://dmoz.org/Business/Industries/Defense .
The DUKW (commonly called "duck") is an amphibious vehicle that was designed and built for military use in World War II and is still in use for commercial tours and adventure rides on land and water.