GM’s Chevrolet Bel Air Sporty two-door convertible blends tradition and innovation The Chevrolet Bel Air concept is a modern American convertible built on the tradition of the legendary 1955-57 Chevys of the same name. The two-door Bel Air concept celebrates an American icon in a manner reminiscent of the originals with style, performance and an exciting new engine. "This is not just another convertible," said Wayne Cherry, GM’s vice president…