An article in the Green Bay Press-Gazette on November 18, 1962, warned readers not to be surprised if they were flagged down at a Green Bay & Western (GBW) railroad crossing by a jeep. The article goes on to describe that GBW bought 2 1962 FCs for use on their railroad, some of the Jeep’s features, and how they would be used. The history of these FCs (shown below) and the GBW in general can be found at the Green Bay & Western Lines website.
One image below appears to be a rough scan showing the two FC-170s at the time of purchase. I’ve added a link to the 2nd photo which shows the FC awaiting restoration as of 2005 (a note under the image asked that it not be reproduced without permission).