Dodge Power Wagon W500
Model: Power Wagon (1945 - 1980)
Wikipedia (Power Wagon): http://en.wikipedia.org/wiki/Dodge_Power_Wagon
The two-ton W500 Power Wagon (only a chassis cab was built) was introduced in 1956 as the C3-HW, and lasted through the 1971 model year. This was replaced in 1972 with the W600 (also cab and chassis only), which was produced until 1977, when all Dodge medium-duty models were discontinued. To compensate for the loss of the medium-duty W600 a new W400 chassis cab was introduced in 1977.