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Re: I didn't know until fairly recently that other GM cars, besides Chevy, had a version of the Nomad.

I didn't know about the Oldsmobile Fiesta. It might not be my first pick but I'd sure be seen in one of those.

Notice that the 3 are not similar in just being 2-door wagons, but that they each have the slanted roof pillars and chrome strips on the tailgate. I think all 3 also have the series of parallel lines across the roof (running perpendicular to the length of the car).

Because, even Chevy, had a 2-door wagon that wasn't a Nomad, having straight roof pillars, plain tailgate and smooth roof (without the lines).

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1957 Chevy 2-door wagon (non-Nomad)

1957 Chevy Nomad

1957 Chevy 2-door sedan delivery

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Although GM had other versions of the "Nomad", other than Chevy (ie, the Pontiac Safari and Oldsmobile Fiesta), I'm not sure if the other GM, Buick, had one. The closest thing I could find to it was this somewhat 'sporty' 4-door wagon...