A journey through the most extraordinary private car collections on the planet, from the hills of Malibu to the underground garages of Tokyo.
The morning fog was still clinging to the canyons above Malibu, California, when the steel door of a nondescript warehouse began to roll upward. Inside, the light revealed a row of Ferrari LaFerraris, each in a different color, lined up like soldiers awaiting inspection. A Porsche 918 Spyder sat next to a McLaren P1, the three cars collectively known as the Holy Trinity of hybrid hypercars. In the corner, covered in a light layer of dust, was a 1962 Ferrari 250 GTO.
This was not a museum. It was a private garage. The owner, a technology executive who preferred to remain anonymous, had assembled one of the most significant collections of modern supercars in the world. And he was not alone.
Across the globe, a small group of collectors has amassed car collections that rival those of national museums. Some are famous. Some are secret. Some are open to the public. All are extraordinary.
This article takes you inside the world’s most exclusive car collections, from the palace of the Sultan of Brunei to the Big Dog Garage of Jay Leno, exploring the cars, the stories, and the people behind them.
The Sultan of Brunei: A Palace of 7,000 Cars
The Istana Nurul Iman palace in Bandar Seri Begawan, the capital of Brunei, is the largest residential palace in the world. With 1,788 rooms, a mosque, and a garage that stretches for acres, it is the home of Sultan Hassanal Bolkiah. And in that garage, hidden from public view, is the largest private car collection in existence.
The numbers are staggering. The Sultan’s collection is estimated to include approximately 7,000 cars, worth an estimated $5 billion. The collection includes hundreds of Ferraris, dozens of McLaren F1s, a fleet of Rolls Royces customized by Pininfarina, and cars that were never offered to the public.
Among the highlights: five McLaren F1s, including one of the rare LM specifications. A Ferrari 456 GT Venice station wagon, one of seven built for the Sultan. A Rolls Royce Silver Spur with a custom Pininfarina body, one of a kind. Dozens of Dauer 962 Le Mans cars, road legal versions of the Porsche 962 race car.
The cars are stored in massive hangars. Some are maintained in pristine condition. Others sit in disrepair, covered in dust, their tires flat, their batteries dead. The Sultan has not driven most of them in decades.
Why does one man need 7,000 cars? There is no rational answer. The collection is not about driving. It is about ownership. It is about having what no one else can have.
The Sultan of Brunei’s collection is the most exclusive in the world. It is also the most secret. Few outsiders have seen it. Fewer have documented it. The cars remain hidden, waiting.
Jay Leno’s Big Dog Garage: A Working Collection
In Burbank, California, a different kind of collection exists. Jay Leno’s Big Dog Garage is not a storage facility. It is a working shop. The cars are driven, maintained, and enjoyed.
The collection numbers approximately 300 cars, far smaller than the Sultan’s. But the range is astonishing. A 1906 Stanley Steamer, a steam powered car that was once a record holder. A 1963 Chrysler Turbine, one of the few remaining turbine powered cars. A 1994 McLaren F1, which Leno drives regularly. A 2019 Bugatti Chiron, one of the most powerful production cars ever built.
Leno’s philosophy is simple. Cars are meant to be driven. He drives his cars on public roads, often filming them for his YouTube channel. He has a team of mechanics who keep the collection running. The garage is a place of work, not a museum.
The collection is also accessible. Leno has opened his garage to television crews, journalists, and fans. He is passionate about sharing his cars with the world.
What makes Leno’s collection special is not the number of cars. It is the variety. He has steam cars, electric cars from the early 1900s, modern hybrids, and everything in between. The collection is a history of automotive technology.
The Petersen Museum Vault: A Public Collection with Private Access
The Petersen Automotive Museum in Los Angeles, California, has a public collection that is world class. But beneath the museum, in a climate controlled vault, is a private collection that is rarely seen.
The vault is not open to the general public. It is accessible only through special tours. Inside, the cars are arranged by theme: racing cars, movie cars, concept cars, and luxury cars.
Highlights include the 1939 Rolls Royce Phantom III used by the British royal family. The 1967 Ford GT40 that finished third at Le Mans. The 1998 Nissan R390 GT1, one of the few road legal versions of the race car.
The vault also contains significant Hollywood cars: the 1968 Ford Mustang GT from Bullitt, the 1981 DeLorean DMC 12 from Back to the Future, and the 1966 Batmobile.
The Petersen vault is a bridge between public and private collections. It is accessible, but only to those who make the effort to visit. It is a collection for enthusiasts, by enthusiasts.
The Mullin Automotive Museum: French Art Deco Masterpieces
In Oxnard, California, the Mullin Automotive Museum housed a collection of French art deco cars before it closed in 2024. The collection was assembled by Peter Mullin, an insurance executive with a passion for Bugatti.
The collection included one of the finest assemblies of Bugatti automobiles in the world. The 1938 Bugatti Type 57 SC Atlantic, one of only two surviving examples. The 1937 Bugatti Type 57S, a stunningly beautiful coupe. The 1936 Bugatti Type 57SC Atlantic, a car so valuable that it is rarely seen outside of museums.
The collection also included other French art deco cars: Delahayes, Delages, and Talbot Lagos. These cars are not just automobiles. They are works of art, with bodies sculpted by the greatest coachbuilders of the era.
The Mullin collection was unique. It focused on a specific era and a specific style. It was not about speed. It was about beauty.
The Ralph Lauren Collection: Fashion Meets Automotive Art
In New York, fashion designer Ralph Lauren has assembled a collection that rivals any in the world. The collection is not open to the public, but it has been exhibited at the Louvre in Paris and the Museum of Fine Arts in Boston.
The collection includes some of the most significant cars ever built. A 1938 Bugatti Type 57SC Atlantic, one of the two surviving examples not in the Mullin collection. A 1954 Ferrari 375 Plus, which won the Mille Miglia. A 1962 Ferrari 250 GTO, one of the most valuable cars in the world. A 1996 McLaren F1 LM, one of only five built.
Ralph Lauren’s collection is curated with the same eye for detail that he applies to his fashion lines. The cars are presented in pristine condition, often displayed in settings that complement their design.
What sets the Ralph Lauren collection apart is its quality. Every car is a masterpiece. There are no filler cars. Each one is significant.
The Miles Collier Collection: The Revs Institute
In Naples, Florida, the Revs Institute houses the collection of Miles Collier. The focus is on racing cars and the history of automotive engineering.
The collection includes the 1964 Ferrari 250 LM that won Le Mans. The 1963 Shelby Cobra 289 that dominated American sports car racing. The 1907 Renault that set land speed records.
But the Revs Institute is not just a car museum. It is a research library. The collection includes thousands of books, photographs, and documents. Scholars can study the history of the automobile in ways that are not possible elsewhere.
The Miles Collier collection is for students of automotive history. It is not about flash. It is about knowledge.

The S.A.M. Collection: A Secret in the Swiss Alps
In the Swiss Alps, in a small town called St. Moritz, there is a collection that few have seen. The S.A.M. Collection, named for its founder, is a secret.
The cars are stored in an underground bunker. Access is by appointment only, and only for serious collectors or researchers. The collection includes dozens of Ferraris, including a 250 GTO, a 288 GTO, an F40, an F50, and an Enzo. It includes rare Porsches, like the 959 and the Carrera GT. It includes Mercedes Benz 300 SL Gullwings, Bugatti Type 57s, and Alfa Romeo 8C 2900Bs.
The S.A.M. Collection is the ultimate expression of private collecting. It is for the owner alone. The public is not invited.
The Schlumpf Collection: The Musée National de l’Automobile
In Mulhouse, France, the Schlumpf Collection is now a public museum, but it began as a private obsession. In the 1960s and 1970s, the Schlumpf brothers, Fritz and Hans, used their textile fortune to buy hundreds of Bugattis, and Ferraris, and Alfa Romeos.
The collection includes more than 400 cars. It is the largest collection of Bugattis in the world, including a 1939 Type 57SC Atlantic. It includes the 1970 Ferrari 512S Berlinetta, one of the most valuable race cars ever built.
The Schlumpf brothers spent beyond their means. They went bankrupt. The collection was seized by the French government and turned into a museum. Today, it is open to the public.
The Schlumpf Collection is a cautionary tale. Obsession can lead to ruin. But the cars survive.
The Private Collectors You Have Never Heard Of
For every famous collector, there are dozens who remain anonymous. A hedge fund manager in Greenwich, Connecticut, has a collection of 20 Ferraris, including three 250 GTOs. He does not display them. He does not drive them. He just owns them.
A software developer in Seattle has a collection of vintage Porsches, all 911s from 1965 to 1973. He drives them regularly, rotating through the collection. He posts photos on social media but does not disclose his identity.
A family in Tokyo has a collection of Japanese classics: Nissan GT-Rs, Mazda RX-7s, Toyota 2000GTs. They are kept in a garage in the city, hidden from view.
The private collectors are everywhere. You just do not know them.
The Costs of Collecting: Storage, Maintenance, Insurance
Maintaining a significant car collection is not cheap. The costs are substantial.
Storage: A climate controlled garage costs $1,000 to $5,000 per car per year, depending on location and amenities.
Maintenance: A Ferrari requires an annual service costing $2,000 to $5,000. A Bugatti requires specialized service costing $20,000 or more.
Insurance: Agreed value insurance for a $10 million car can cost $50,000 per year or more.
Staff: A collection of 100 cars requires a full time staff of mechanics, detailers, and security. Salaries can exceed $500,000 per year.
The cost of collecting is a barrier to entry. It is not enough to buy the cars. You must also care for them.
The Future of Car Collecting
The future of car collecting is uncertain. Electric cars are quiet and efficient. They do not have the same emotional appeal as a screaming V12. The values of internal combustion cars have soared as collectors anticipate their extinction.
Younger collectors are interested in different cars. The Nissan GT-R, the Toyota Supra, the Mazda RX-7 these cars are becoming collectible. The Ferrari 250 GTO will always be valuable, but the next generation of collectors may prefer the cars of their youth.
The great private collections will remain. The Sultan’s 7,000 cars, Jay Leno’s 300, the anonymous garages of the wealthy. But the nature of collecting is changing.
Conclusion: Why We Collect
The world’s most exclusive car collections are not about transportation. They are about passion, obsession, and the desire to own a piece of history.
The Sultan of Brunei collects for ownership alone. Jay Leno collects to drive. Peter Mullin collected to preserve. The anonymous collectors collect for themselves.
There is no right way to collect. There is only the love of the machine.
As the sun sets over the Pacific Ocean, the steel door in Malibu closes. The LaFerraris disappear into the darkness. The 250 GTO returns to its corner, covered in dust.
Outside, a Toyota Camry drives past. The driver does not know what is hidden behind the door. He does not need to know.
The cars are not for him. They are for the collector.
And that is the point of the world’s most exclusive car collections. They are not for everyone. They are for the few who understand.

















