Today the only reason people remember the Sebring 12 Hours from 1970 is not for the Ferrari that won it, but the Porsche ... that the car turned out to be not quite a match for the 917: it was ...

But Porsche had been experimenting with the technology before that in motorsport. The wildly successful 917/10 and 917/30 race ... presenting the very first car, affectionately dubbed “No.