You missed my favorite -the Adams Farwell. It was a 5 cylinder , air cooled, rotary (the entire engine rotated)It had no flywheel as the engine was its own flywheel. The rotation also aided the air cooling. As I recall, it also required no valve springs as the centrifugal force closed the valves. The car itself was also unusual, with a 4 speed transmission and a movable steering column that allowed driving from the right, left, or center - the US hadn't settled on which side of the road we would we drive on.
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