When we think of coachbuilding, we usually think of the absolutely spectacular classic cars from the pre-WWII era that were built for the world's wealthiest. These vehicles were total one-offs, built and designed specifically for the individual tastes of each customer. While the tradition of coachbuilding did die down after that Great Gatsby-esque era, it never completely went away. In fact, coachbuilding seems to be having a bit of a revival in recent years.Plenty of car brands have recently dipped their toes into making bespoke creations for the world's wealthiest and most discerning buyers. The cars on this list are a mixture of official projects by the original manufacturers themselves and unique builds and conversions carried out by smaller, specialist coachbuilders. What they all have in common, though, is that they're the greatest one-off coachbuilt cars the modern car industry has created. Rolls-Royce Sweptail Rolls-RoyceRolls-Royce is one of the few big brands that has decided to embrace coachbuilding for today's ultra-wealthy customers. Its coachbuilt division allows VIP customers to have anything from a uniquely spec'd production model all the way up to a one-of-one, bespoke creation just for themselves. The car that launched this coachbuilt division was the Rolls-Royce Sweptail. This was a true one-of-one coachbuilt special, made for a VIP customer (Sam Li, the son of Hong Kong-based real estate billionaire Samuel Tak Lee) and displayed at motor shows and events all over the world. Based on the Rolls-Royce Phantom Coupe, it took four years to build and cost around £10 million ($13.4 million). This made it the most expensive production car in the world at the time.While it may no longer be the most expensive production car in the world (another car on this list overtook it by a significant amount) and Rolls-Royce has made other stunning special projects since (like the Boat Tail), the Rolls-Royce Sweptail is still one of the coolest modern coachbuilt cars. While its design has been a bit divisive, you can't deny that it's unique and eye-catching. Aston Martin Rapide Bertone Jet 2+2 Andrew Bone, via Wikimedia CommonsAnother brand that's fully embraced coachbuilding for the modern era is Aston Martin. The legendary British marque has made several coachbuilt specials in recent years. Like the Rolls-Royces made under the coachbuilt division, they typically go to VIP customers who have the money (and patience!) to have a one-off car made just for them.One of the most famous examples of this is the Aston Martin Rapide Bertone Jet 2+2. This was built in 2013 for known shooting brake enthusiast Barry Weir. For a long time, it was also the last vehicle ever built by Bertone, as the original Bertone company went bust a year later. It's based on the Aston Martin Rapide, with the rear end changed from its sedan form into a shooting brake form. That includes using the Series 1 Rapide's 6.0-liter V12 engine, which produced 470 hp and 443 lb-ft of torque.The Jet 2+2 was originally going to be part of a limited production run. There had reportedly been interest from other super-wealthy buyers, and Bertone had reportedly offered to build 10 more examples for them. However, Bertone's financial failure happened before this could be realised.This car was owned by Barry Weir up until 2020, when he not only put the car up for sale but also all the original moulds that were used to create that shooting brake rear end. As Weir (who is now retired and lives in Gurnesy) explained to Influx, he had managed to source the original moulds from a contact in Italy. He hoped that a future buyer would pick up the project where he left off, and potentially make more examples of what was his pride and joy. Aston Martin Victor Aston MartinAnother one-off from the legendary British marque, the Aston Martin Victor is the kind of car that pure driving enthusiasts go crazy for. It's based on the Aston Martin One-77, another super-rare car that had an official production run of only 77 examples. It has a re-worked version of the One-77's 7.3-liter Cosworth V12, producing 836 hp and 606 lb-ft of torque. It also had a 6-speed manual transmission instead of the 6-speed automated manual the One-77 had. This made it the most powerful Aston Martin with a manual transmission at the time! The styling was meant to evoke the Aston Martin V8 Vantage of the 1970s, and the side skirts and side-exit exhaust were taken from the Aston Martin Vulcan.When it was unveiled, the Aston Martin Victor was heavily praised by enthusiasts and rightfully so. This was a gloriously analogue supercar in an era where the car industry was trending towards electrification. Aston Martin will probably never be another car like Victor ever again, and it's so niche that it could only have gone to a VIP customer with a lot of money. That easily makes it one of the coolest modern coachbuilt cars ever. Bugatti La Voiture Noir When talking about the Rolls-Royce Sweptail, I mentioned that another car managed to solidly beat its record as the most expensive production car ever. This is the car that managed that. The Bugatti La Voiture Noire made big headlines all over the automotive world when it was unveiled, and it's not difficult to see why.This special hypercar was inspired by an example of the Type 57S Atlantic known as "La Voiture Noire". This was a black example that was Jean Bugatti's personal car, and it's been missing ever since it was sent into hiding from the advancing Nazis in World War II. The modern interpretation of La Voiture Noire is based on the Bugatti Chiron, sharing its 8-liter W16 engine and 7-speed dual-clutch automatic transmission. The W16 engine is unchanged from the standard Chiron's engine, but the transmission was heavily revised so that it would feel like a more relaxed car to drive.The La Voiture Noire was sold to a private collector for around $12.8 million. The identity of its owner has never been revealed. There was speculation that soccer player (and known lover of fast and expensive cars) Cristiano Ronaldo was that private collector, but that was denied by his spokesperson. Unless some new information comes out down the line, we may never know who owns this incredible vehicle. Ferrari P4/5 by Pininfarina This is possibly one of the most interesting cars on this list. Not only does it have a very cool owner, but it also has an incredible backstory. The Ferrari P4/5 was a one-off commission for Jim Glickenhaus, a movie producer and the co-founder of the Scuderia Cameron Glickenhaus supercar manufacturer. While it may be badged as a Ferrari, Maranello actually didn't know that this car was being made at first. This commission was handled entirely by Pininfarina, which let Jim Glickenhaus's imagination run wild as to what kind of car he wanted. This is why the car is officially known as the Ferrari P4/5 by Pininfarina, instead of being a true one-off Ferrari.Quite a few options were explored for a donor chassis for the P4/5. This included the Maserati MC12, as well as a few specialist race car chassis. Pininfarina eventually decided to use the chassis from a Ferrari Enzo (specifically, the last ever unsold Enzo that Jim Glickenhaus had bought from Ferrari), creating the retro-styled body to replace the Enzo's original one. That body's design is based on the Ferrari P racing cars of the 1960s and 1970s, specifically Jim Glickenhaus's own P4 that he had also delivered to Pininfarina. That Enzo chassis means that it has the same 6-liter V12 and 6-speed automated manual transmission as a standard Enzo, producing 652 bhp and 485 lb-ft of torque. As an interesting aside, the P4/5 also still has its original Enzo VIN.If it's not a 'true' Ferrari, then why was it allowed to have Ferrari badges on it? Well, that's entirely because of then-Ferrari boss Luca DiMontezemolo's reaction when he found out about the car. When he first saw it, he thought that it deserved to be badged as a Ferrari. With the official blessing from Ferrari's top guy, those Ferrari badges were fitted, and the P4/5 displays them proudly. Ferrari P80/C The second car on this list to have a Ferrari badge, this one was actually an official Ferrari project. The Ferrari P80/C is a one-of-one track-only supercar that was commissioned by a very wealthy client. The brief that the client gave Ferrari was "to create a modern Sports Prototype inspired by some of the most iconic models in Ferrari’s history, such as the 330 P3/P4 and Dino 206 S of the 1960s". To fulfil that brief, Ferrari took the chassis from the 488 GT3 race car and gave it a striking new body. This included some radical aerodynamic elements that you wouldn't be able to have on a road-legal car. Ferrari was coy about releasing performance figures for the P80/C, but we do know that it has the same 3.9-liter twin-turbocharged V8 as the 488 GT3 and that it's allegedly unrestricted. The regular 488 GT3 has 592 hp and 516 lb-ft of torque, so it's safe to assume that the P80/C will have over 600 hp.The Ferrari P80/C was unveiled in 2019, but it had been in development from as far back as 2015. This means it has one of the longest development times of any car on this list. Only the Rolls-Royce Sweptail really matches it in that regard. The car's owner was thought to be Hong Kong-based entrepreneur TK Mak, but according to one Instagram user it's owned by an American investment banker called Roger Beit. Known as sparky18888, Beit has made a name for himself on Instagram for his incredible car collection. When you see that he's got basically any road-legal supercar his heart could desire, the next logical step was definitely to get something that's not only unique to him but also is a dedicated track monster. Ferrari SP12 EC FerrariThe third one-off coachbuilt car with a Ferrari badge on this list, this car is another one with a very interesting backstory. The Ferrari SP12 EC was custom-built for legendary guitarist Eric Clapton, who's a massive enthusiast of the brand. He wanted a modern interpretation of the Ferrari 512 BB. Clapton had owned a 512 BB when he was younger, and it was a model he especially loved. The SP12 EC is based on the Ferrari 458 Italia, and the modifications to make it into Clapton's custom creation were almost entirely cosmetic. Clapton had originally wanted it to be fitted with a V12 engine, but Ferrari quickly realised that this wasn't possible. Instead, they made do with the 458's standard 4.5-liter V8 that produces 562 hp and 398 lb-ft of torque.Eric Clapton hasn't had the greatest reputation in recent years. He seems to hit the headlines more for his political views these days rather than anything to do with his music. But, it can't be denied that the hitmaker behind "Layla" and "Tears In Heaven" has seriously great taste in cars! Niels van Roij Design Breadvan Homage A red 2002 Ferrari 550 Breadvan Hommage by Niels Van Roij front quarter rolling shotNiels van Roij has made a name for himself by developing some of the coolest examples of modern coachbuilding. The Breadvan Homage, built by his own Niels van Roij Design coachbuilding company, is perhaps his most famous creation. Based on a Ferrari 550 Maranello, it's a tribute to the Ferrari 250 GT SWB Breadvan. This was another one-off coachbuilt car, created by former Ferrari employee Giotto Bizzarini for Count Giovanni Volpi di Misurata. The count was the owner of the Scuderia Serenissima racing team, and he'd commissioned Mr. Bizzarini to build the original breadvan as a way of getting around Enzo Ferrari personally banning him from buying any Ferrari GTOs for his racing team.As it's based on a Ferrari 550 Maranello, the Breadvan Homage uses the same 5.5-liter V12 and 6-speed gated manual transmission. Niels van Roij didn't mention any modifications to the powertrain, so it's likely that it still has the 550 Maranello's stock output of 478 hp and 419 lb-ft of torque. Niels van Roij Design Rolls-Royce Silver Spectre Shooting Brake Niels Van Roij DesignThe second of Niels van Roij's creations on this list, the Rolls-Royce Silver Spectre Shooting Brake is one that's just recently captured a lot of public attention. That's down to it now being owned by legendary IndyCar driver Dario Franchitti. Franchitti regularly posts pictures of the car on his Instagram account, and it was featured in the video The Late Brake Show did about his expansive car collection. The Silver Spectre is based on the Rolls-Royce Wraith. Much of the bodywork is actually carried over from the original car, with the main difference being that glorious-looking shooting brake rear end. That makes the Silver Spectre a seriously practical car, being able to take Franchitti's entire family and their luggage on holidays to the European ski resorts (he did have a custom, color-coded roof box ordered to carry some extra stuff, though!).The Silver Spectre has the same 6.6-liter twin-turbocharged V12 and 8-speed automatic transmission as the Wraith it's based on. However, the Silver Spectre has had a little bit of tinkering done to that engine. Niels van Roij Design had it tuned up to 690 bhp and 664 lb-ft of torque. Considering how fast the Wraith is in its factory specification, the Silver Spectre must have some serious speed if you floor it on the autobahn. Niels van Roij Design Tesla Model SB Niels Van Roij DesignThe third car on this list made by Niels van Roij Design is also the only one on this list that's fully electric. This is a re-imagining of the Tesla Model S, made for a Dutch collector called Floris de Raadt. He's a massive fan of shooting brakes (he's owned several one-of-a-kind examples in the past, according to Niels van Roij) and he was also an early adopter of electric cars. It only made sense, then, that he would want to have an electric shooting brake. Niels van Roij used a Tesla Model S that de Raadt already owned, and designed it to look as elegant as possible rather than for absolute practicality. The result is a shooting brake that even people who aren't fans of the Tesla Model S think is gorgeous.Floris de Raadt was very happy with the car when it was delivered. Not only did he give a great testimonial to Niels van Roij about it, but he apparently still uses it as his daily driver! The design also clearly inspired some other people, as there have been other Model S shooting brakes made by dfferent builders that have appeared since.