Dolly was a light car brand that emerged in the United Kingdom in the early 1920s. The vehicle was notable for its innovative engineering design, which featured a 4-cylinder water-cooled engine. This engine was coupled with a separate gearbox and utilized a shaft drive system.

One of the distinctive aspects of the Dolly's design was the slant of the engine and propeller shaft towards the rear of the vehicle. This configuration eliminated the need for a universal joint on the shaft, allowing for the use of an underslung worm gear on the rear axle. Despite its unique features, the Dolly car likely never progressed beyond the prototype stage, limiting its impact on the automotive market.