The 400th and last of the Enzo special series road model (click here to see the Enzo picture gallery) was presented to the late Pope John Paul II in January, a few months before his death.
Ferrari said at the time the car had been specially made for the pope.
The car was snapped up by a private American collector at an auction in June - two months after the late pope's death.
John Paul II's German successor was also presented with the steering wheel from the Ferrari Formula One car driven by his German compatriot Michael Schumacher.
"It's very complicated to drive, Your Holiness, there is a lot of technology" involved, said Montezemolo of the Formula One car.
The pope said he had his hands full trying to "drive the Church".