The McLaren 650s Spider is a luxurious sports car that features a two-piece retractable hard roof. This roof is designed to provide the driver with the best of both worlds – the open-air experience of a convertible and the protection of a coupe. The roof can be opened or closed in just 17 seconds, and can be operated at speeds of up to 30 mph. The roof is made from lightweight composite materials, and is designed to reduce wind noise and turbulence when driving with the roof open. The McLaren 650s Spider also features a 3.8-liter twin-turbocharged V8 engine, which produces 641 horsepower and 500 lb-ft of torque. This engine is mated to a seven-speed dual-clutch transmission, which provides smooth and responsive shifts. The McLaren 650s Spider also features a variety of advanced driver assistance systems, such as adaptive cruise control, lane keep assist, and blind spot monitoring.