The Opel 4 PS, launched in 1924, was soon given the name Laubfrosch because it was painted green. An Alvis model from 1925 was called the "Tadpole" or "Tadpole" because all the mechanical components, i.e. the entire weight, were mounted over the front axle. An interesting model, but one that was hardly sold, despite its advanced design and racing success. This report tells the story of the Avis "Tadpole" and shows several examples in pictures.