The XP-300's body and frame were welded together into a single unit.
It shares many common mechanical components with the Le Sabre.
Representative of GM's "long and low" design philosophy in the 1950s, the XP-300 measures over 16 feet (4,900 mm) in total length and has a 116-inch (2,900 mm) wheelbase with just 6.5 inches (170 mm) of ground clearance.
The car is only 39.1 inches (990 mm) in height and 80 inches (2,000 mm) in width.
Weighing in at 3,125 pounds (1,417 kg), the total weight of the car was reduced by its use of heat-treated, aluminum body panels.

The car also features relatively heavy and wide drum brakes that necessitated two sets of brake shoes for each wheel.
In addition, it boasts hydraulic steel bars that made it more rigid while being driven, helping form a framework somewhat similar to a roll cage; similarly, four hydraulic jacks that could raise either the driver or passenger side of the car facilitated easier tire changes.
The XP-300 also has de Dion axles based on a Daimler-Benz design used for Grand Prix race cars.
It additionally features four coil springs and a hydraulic system more complex than that of the Le Sabre, which operates the car's cowl vents, door-locking devices, hood, jacks, seats, and windows.

The car was painted "Venus White".
It has functional chrome louvers running down its rocker panels; the forward-mounted louvers served to vent heat from the engine, while the aft ones allowed air to enter the passenger compartment.
Similarly, a chrome fin runs through the center of the car's trunk, hiding hinges for the twin deck lids, while a floodlight-style, sealed-beam backup lamp was mounted in the central fixture, which imitates the exhaust of a jet engine.
The car was originally built with both a folding convertible top and a hardtop that were interchangeable, although the hardware to mount the latter has been removed and the hardtop can no longer be used.

The interior of the XP-300 features pleated blue-leather bucket seats with adjustable inflatable air bladders and a center console.
The car also has a telescoping steering wheel and an instrument panel displaying a prominently mounted combined speedometer/tachometer as well as a fuel gauge.
It also boasted numerous technologies considered safety features in 1951, including its dual brakes, adjustable seats, and adjustable steering wheel in addition to seat belts.
The XP-300's body and frame were welded together into a single unit. It shares many common mechanical components with the Le Sabre. Representative of GM's "long and low" design philosophy in the 1950s, the XP-300 measures over 16 feet (4,900 mm) in total length and has a 116-inch (2,900 mm) wheelbase with just 6.5 inches (170 mm) of ground clearance. The car is only 39.1 inches (990 mm) in height and 80 inches (2,000 mm) in width. Weighing in at 3,125 pounds (1,417 kg), the total weight of the car was reduced by its use of heat-treated, aluminum body panels.
The car also features relatively heavy and wide drum brakes that necessitated two sets of brake shoes for each wheel. In addition, it boasts hydraulic steel bars that made it more rigid while being driven, helping form a framework somewhat similar to a roll cage; similarly, four hydraulic jacks that could raise either the driver or passenger side of the car facilitated easier tire changes. The XP-300 also has de Dion axles based on a Daimler-Benz design used for Grand Prix race cars. It additionally features four coil springs and a hydraulic system more complex than that of the Le Sabre, which operates the car's cowl vents, door-locking devices, hood, jacks, seats, and windows.
The car was painted "Venus White". It has functional chrome louvers running down its rocker panels; the forward-mounted louvers served to vent heat from the engine, while the aft ones allowed air to enter the passenger compartment. Similarly, a chrome fin runs through the center of the car's trunk, hiding hinges for the twin deck lids, while a floodlight-style, sealed-beam backup lamp was mounted in the central fixture, which imitates the exhaust of a jet engine. The car was originally built with both a folding convertible top and a hardtop that were interchangeable, although the hardware to mount the latter has been removed and the hardtop can no longer be used.
The interior of the XP-300 features pleated blue-leather bucket seats with adjustable inflatable air bladders and a center console. The car also has a telescoping steering wheel and an instrument panel displaying a prominently mounted combined speedometer/tachometer as well as a fuel gauge. It also boasted numerous technologies considered safety features in 1951, including its dual brakes, adjustable seats, and adjustable steering wheel in addition to seat belts.
Buick XP-300