The "Duck" was actually a U.S. military vehicle built by GM (under the model letters DUKW). According to wikipedia, it was supplied to the allies during World War II. Not sure what the official story would be of how Spalko got some. [].
- During WWII, the Soviet Union WAS an ally. The link you provided explains the rest: "586 were supplied to the Soviet Union, becoming the basis for the BAV 485." This latter unit, introduced within the Soviet military in 1952, is probably what the "Duck" seen in the movie is meant to represent. jSarek 06:18, 6 January 2009 (UTC)
This is a GAZ-46. Edit
It's a GAZ-46, not a ZiL. The ZiL was larger with six wheels, whilst this is very clearly the smaller four-wheeled GAZ. Why is it called a ZiL-485?