The secondhand book and photo website Kongfz.com is a wonderful source of old carbooks and photos. Recently a series of 10 photos of Haiyan minicars made in Shanghai appeared and your author took the chance to buy the photos. Here a preview.
This is a closed version of the Haiyan 730 Second model convertible of 1959. Probably there was only one prototype. Note the small track width of the rear wheels.