Several years before Cadillac invented the electric starter and waxed poetic about “The Penalty of Leadership” — even before being part of General Motors — the car company was building single-cylinder carriages like this 1907 Model M. While today we pay more for open-air motoring, back in the early years of the automobile, closed vehicles were the new thing. After 1908, Cadillac moved to four-cylinders and, then, V8s, thereby becoming the “Standard of the World.”

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