Swinging it back to the vehicle topic...

If there is a real-world equivalent, then there is no IP theft, is there?  Is there a real-world equivalent to this vehicle?

I mean, if I sell a model of a Sherman tank, New Line pictures can't sue me for recreating a vehicle that appears in "Saving Private Ryan" because they didn't make it up in the first place.

(And technically this discussion belongs in another forum...)