Definition: Compose a new way to ask the same question. The new question must be asking the exact same thing as the original question does. Without any other information, you should be able to tell that the original question and the new question are the same. Preserve bracketed phrases in your new question. You can change the rest of the question provided the above requirements are satisfied. The new question must have a natural, fluent formulation, as if it were composed by a native English speaker. You will be given three pieces of information to help you create better questions. Those are: "Answer": the answer to the question, e.g., "Honolulu". "Answer Type": the type of the answer, e.g., "Location". "Auxiliary Information" is a detailed description of some concepts mentioned in the question, if any.
Input: original question: Which automotive class has [Autobianchi Stellina] as example?
answer: roadster, convertible
answer type: Automotive Class.
auxiliary information: The Autobianchi Stellina is a small spider from the Italian automaker, Autobianchi, built for only two years, 1964 and 1965. It was based on the mechanicals of the chassis Fiat 600D, but had a unique unibody structure, with the outside panels made of fibreglass reinforced plastics, based on a steel frame. It was the first Italian car with a fibreglass body, and one of the first in the world. Powered by Fiat 600D's rear-mounted, water-cooled 767 cc straight-4 engine, delivering 29 hp, the Stellina had drum brakes on all four wheels. With sleek styling penned by Luigi Rapi, the Stellina was first presented as a prototype at the 1963 Turin Motor Show, and went on sale a year later with a price tag of almost a million lira. Only 502 Stellinas were made until production ceased in 1965, when Fiat launched a, slightly larger, similar Fiat 850 Spider.

[Autobianchi Stellina] is part of what automotive class?