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During World War Two the Porsche team was given its head to create a purpose-designed amphibious military vehicle, the result was the Schwimmwagen

A completed Type 166 Schwimmwagen was a thoroughly evolved vehicle, shown with its propeller and soft-top deployed. Air feeding and cooling its engine was inducted well above the waterline
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The Porsche engineers would have been gratified by this assessment of their work by the enemy industry’