This insane Cadillac V12 remains one of the greatest "what ifs" of the American car industry.
Morning Overview on MSN
Cadillac once built a V12 so huge it was too big
Cadillac has never been shy about chasing excess, but one of its boldest engines never made it to the showroom. In the 1960s the brand developed an overhead cam V12 so large and complex that it ...
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