In September 1963, Porsche unveiled the 901, its first true innovation since the 356. That’s when Peugeot stepped in, asserting its exclusive rights to three-digit model names with a zero in the middle—trademarked before World War II. Strangely enough, Peugeot had never enforced this rule before, nor has it since. The real reason? The Peugeot family had not forgotten the 1940 requisition of their factories, followed by the near-total looting of their industrial equipment in August 1944. The names behind these actions? Ferdinand Porsche and his son-in-law Anton Piëch. Wishing to avoid reopening old wounds, the Porsche family swiftly complied with Peugeot’s request, renaming the model 911—a name that went on to become legendary.