This Hypercar Is Based On a Porsche Carrera GTInstagram / Miller Motorcars (Instagram / Miller Motorcars)The Porsche Carrera GT has been out of production for 20 years, but its influence is as strong as it has ever been. Fresh off cutting a ton of time off its Nürburgring Nordschleife lap without any new development, the V-10 supercar has had no issue maintaining its place as one of the most collectible cars ever built by Porsche. Massive valuations mean that most enthusiasts would likely want to keep their Carrera GTs completely stock ... but one new bespoke build based on the decades-old analog supercar has gone in an entirely different direction.This is the JC9, a new one-off from designer Jason Castriota created in collaboration with Connecticut dealership Miller Motorcars. It is a coachbuilt project in the tradition of some of Castriota's best past work, the Ferrari Enzo-based Pininfarina P4/5. While that car was also based on a beloved classic now worth a comfortable seven figures, the JC9 stands out because it was built decades after the Carrera GT was a new car, and certainly raises questions about whether or not an all-time pantheon supercar should be cut up to create something new.That said, the Instagram announcement simply says that the car is "fully constructed out of carbon fiber and is based on the Porsche Carrera GT." That leaves wiggle room for the possibility that this is instead built around a donor powertrain, perhaps even a rebuilt or spare powertrain, on an unrelated donor chassis. A photo of the dashboard also shared on Instagram seems to indicate that Carrera GT parts were used extensively, including the gauge cluster and distinctive balsa wood shifter, adding to the speculation that a real Carrera GT was sacrificed in the creation of the one-off.No matter how much Carrera GT is in the JC9, the resulting project is a modern reimagining of a late 1960s prototype that most directly invokes the short-tailed Porsche 917K that won Le Mans in 1970 and 1971. That makes it spectacular and unique, whether or not it makes automotive collectors and commenters around the world upset.You Might Also LikeIf You Can Only Own One Car, Make It One of TheseThese Are the Most Popular Cars by State