Its creator bills it as “The World’s Most Elegant Convertible,” but the rest of us call it the 2007 Bentley Azure, an exquisite drop top that should set buyers back about $350,000. Power comes from a 450-horsepower, twin-turbocharged 6.75-liter V8 that Bentley claims will propel this car of the stars to 60 mph in 5.9 seconds, with a top speed of 168 mph.