A "single-seater" refers to a type of vehicle designed to accommodate only one person. This term is commonly used in motorsports, particularly in racing cars like those seen in Formula 1 or IndyCar. Single-seaters are built for high performance, featuring lightweight structures and powerful engines to achieve maximum speed and agility on the track. In addition to racing, single-seaters can also refer to aircraft designed for one pilot. These aircraft are often used for training or recreational flying. The design focuses on efficiency and maneuverability, making them ideal for solo pilots who seek a streamlined flying experience.