the factory built Nash prototype truck had a 1942 Nash 600 front clip and cabin up to the B pillar, where a panel was welded to the car body, to form the pickup cab.

The fabrication was placed on a 1936 Nash frame. Perfect Steel Body Co. provided a pickup box, and the rear fenders came from a 1941 Ambassador.

The prototype pickup was used by the Nash plant until it was gifted to a retiring engineer in the late 1950s. This engineer traded it in at a Wisconsin dealership, who then used it as a shop truck. 

Later, one of the dealership’s mechanics bought it for use on his farm. This mechanic’s son disassembled it, like Jim’s truck, for a long period of time. In 1980, Nash Club member Don Lope bought and reassembled it.

This is a different pickup, a 1954 that was originally a company truck for Nash’s Milwaukee body plant, and then this pickup was being used by Jensen Crankshaft of Kenosha until the late ’60s.

Since this was one of the few factory trucks, and then it had a 2nd life as a shop truck, it's twice as interesting as any Ford or Chevy. 

https://www.oldcarsweekly.com/the-rarely-seen-factory-1948-nash-pickup

I doubt anyone under 40 knows what a Nash is, and no one under 30 has seen one. 

Other than you and I, there probably are only a couple hundred people that think a Nash or a Hudson truck are interesting.