caption: The image shows a black and white drawing of an old-fashioned motorcycle with a sidecar, which is believed to be one of the most expensive motorcycles in the world. It has a sleek, aerodynamic design with a low-slung frame, a wide handlebar, and a large, round headlight. The sidecar is decorated with intricate details, such as a large engine and a curved seat. The motorcycle is painted in a classic, vintage style, with a glossy finish that reflects the light.