Virtually all sports cars are either convertibles or come in a droptop version. Purists would say a real sports car has to be open-air. Others would point out that a coupe offers the ultimate in chassis rigidity and tight handling, thereby making it the truest sports car form.
Sports cars carry a cargoful of assets and liabilities. The pluses are obvious — mainly the fun factor of top-down driving (in the case of convertibles), exhilarating performance and head-turning looks. But they tend to cloud the minuses, which can include cramped accommodations, a stiff ride and high fuel consumption.