Brunei holds the Guinness World Record for the largest private Rolls-Royce collection, with around 150 cars, while the Sultan and his brother, Prince Jefri Bolkiah, are said to own an additional 1,998 luxury vehicles.Prince Jefri relinquished a large number of assets, including more than 2,000 automobiles, 500 homes, yachts, planes, and pricey purchases from Asprey, Ferrari, and Rolls-Royce, as part of a 2000 deal with the Bruneian government.[3] Prince Jefri and his oldest son, Pengiran Muda Abdul Hakeem, amassed an amazing collection of over 3,500 cars behind closed doors by the end of the 1990s.[4] Additionally, a Pagani Huayra,[5] Ferrari 599 GTB, Mercedes McLaren SLR, and Lamborghini Murciélago LP640 are among the luxurious sports cars that Crown Prince Al-Muhtadee Billah has.A small number of 550s have been fitted with infrared cameras for night driving and coated in matte black finishes that reflect radar, which is rather sophisticated technology for the late 1990s.These unique collector cars, which included several AMG specials with huge engines, wood or carbon fibre-trimmed interiors, and subjected to tropical heat, monsoon winds, and rain, eventually deteriorated.[8] A suitable roof provided superior protection for a late-1990s Rolls-Royce convertible that was parked next to the Mercedes-Benz fleet but its interior has similarly deteriorated as the leather wrap was hanging loosely from the steel rim, the heat had melted the foam cushioning of the steering wheel onto the driver's seat, and the rest of the inside has been covered in mold.Twelve late-model Lamborghinis, such as the Countach[9] and Diablo SE30,[10][11] and four-wheel-drive Bentley station wagons, such as the Turbo R Val-d'Isère[12] and Sports Estate,[13] were part of this collection.Because the orders were so rare and distinctive, the Mulliner Park Ward division of Rolls-Royce established a dedicated "Blackpool team" to create, develop, and test the customised vehicles.Known by names like Dominator, Phoenix, and Camelot, these Bentleys featured production copies of the Java concept vehicle, four-wheel-drive cars, and customised versions of the Continental R coupe.[18] While retaining the front-end styling of the Continental R, included models that were completely reskinned with names ranging from the simple B2 and B3 to the more imaginative Imperial, Spectre, Monte Carlo, Grand Prix, and Buccaneer.[17][23] In 1994, the Sultan and his brother commissioned the Grand Prix, a bespoke V8-powered Bentley with an aluminium body and a top speed of 305 km/h, notable for its unique feature: the letter "H" on the fifth position of the chassis number, signifying it as a non-standard model for select customers like the Brunei royal family.[27] In the mid-1990s, Pininfarina created the ultra-secretive Ferrari FX (chassis 103396) for the Brunei royal family, which was an experimental concept that included a Formula One-style paddle shift gearbox operated by hydraulics, although it wasn't ready for production.[28] The sultan funded the development of the Ferrari F50 GT, with three of the cars intended for him; however, the program was canceled due to internal conflicts and regulatory concerns despite the significant investment.[41] Meanwhile, the yellow Ferrari F40 was restored to its original configuration with a rosso corsa exterior and red cloth interior, maintaining its right-hand drive setup.