Yeah, the truck loooks great. That troop car, however, looks really big and out of proportion. In fcat, I think that it, and the truck, use the same frame.
They're two completely different vehicles... I think you're maybe confusing some of the Dodge trucks/staff cars used by the US and their allies during the war.
The truck's probably loosely based on an Opel Blitz/3 ton truck... There were a lot of them produced with some variety to them though, so it's tough for me to nail down exactly which this would be, especially since I don't think they ever actually say when the timeframe is of Raiders...
I think the German truck's a dual rear-axel though, not sure how accurate that is... There were a lot of trucks the Germans used though, and it's definitely a different frame than the light scout car's sporting.
The car is a German Kzf. 1, light car... There's a medium and heavy model as well, but significant differences in the body/frames on those. The light is still a pretty big car, much larger than the German Kubelwaggen which is what a lot of people are confusing it with. These cars were, I believe, abandoned for the Kubel's as the war progressed, but were kept and used as escorts, staff cars, and scout vehicles due to their rugged nature. A lot of these saw use in the DAK too, so that's cool and sort of sets up the Indy Germans having them.
This car, I wish they'd make... This is what Belloq & Co. are riding in when Indy hijacks the truck. Be sweet to get this ride too.