Beat the heat with these five convertibles that start for less than $35,000

The arrival of summer signals the open season for open-air dining, open-air exercise, and of course, open-air driving. Who doesn't like head room limited only by the lower troposphere? There may be fewer convertibles on the road now than before but the thrill of droptop driving—and a 65-mph hair dryer for the morning commute—never goes...