Another deviation - while I have no idea where it would fit in in terms of usability on the North American continent, I think another Italian designed vehicle would be good for TL-191 US.
The AS-42 "Sahariana", or a design philosophy similar to it.
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After hard lessons learned in the North African desert, being raided by the Long Range Desert Group, the Italians decided they wanted in on some of that hot scout car action. Looking very similar to the German kubelwagen, the AS-42 was designed for long range recon, with a profile and an ability to chase and raid over long distances. It could support a variety of weapons systems to give it some punch.
I think the US Army in TL-191 could benefit from a design like this. I have no idea if it would fit in, but given what it was designed for I think could be good in the western fronts of North America, like Baja, Texas, Utah, Oklahoma and so on, basically where great distances over rough terrain need to be traveled.