Ferrari's Special Projects Division has created some truly special one-off supercars over the years for some extremely wealthy clients. Some of Ferrari's latest one-off creations include the track-only P80/C and the F12-based SP3JC. But how long is the waiting list for these prestigious projects, you may be wondering?

Speaking to Autocar, Ferrari's commercial and marketing boss, Enrico Galliera, said these unique models are in such high demand that they "have the longest waiting list of all our product lines," at four to five years. "The client has not only a unique car but a unique experience working with the designer in the process. It's the pinnacle of Ferrari," he said.

Unsurprisingly, these exclusive one-off models aren't available to just anyone, and are reserved for "top clients only" according to Galliera: "We receive requests from clients, and it won't be considered unless they are in a pool of our top 250 clients or so."

But despite the increasing demand, Ferrari will only produce two or three one-off models a year to make them more desirable. Ferrari's latest one-off, the P80/C, is based on the 488 GT3 race car and has the longest development time of any Ferrari one-off model to date. According to Galliera, a typical one-off takes 18 to 24 months to complete, but this project took between two and a half and three years. "This car was never going to be a road-legal car, so there were no limitations on what we could do," he explained.

This is evident when you look at the P80/C's bespoke body, which is heavily inspired by Ferrari's legendary Sports Prototype racing cars from the 1960s, such as the 330 P3/P4, Dino 206 S, and 250 LM. Ferrari still won't say how much power the P80/C has, but being based on the 488 GT3 means it most likely uses a 3.9-liter twin-turbo V8. Since the car doesn't need to adhere to category restrictions, it should have at least 660 hp on tap to match the 488 GTB road car.

Photo credit: Brian Smith (www.bms-photo.com; Instagram @bms_photo)