Packard and Pontiac were the last automakers to produce straight-engine engines for US passenger cars. Both were discontinued in 1954.
Hemmings on MSN
Independent thinking: The last stand for the little six
The 1954 model year was perhaps the last great time Independent-brand enthusiasts could buy a non-Big Three American car. Sales-wise, 1954 was a disaster for the “Little Six”: Hudson, Kaiser, Packard, ...
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