The Aston Martin DBS Superleggera Volante is the flagship of the historic English brand. It is also the fastest convertible the brand has ever produced. We had the opportunity to test it for a short day. The program? A 5.2-liter V12 with 725 hp and 900 Nm, breathtaking acceleration, a mind-blowing soundtrack and an enormous driving pleasure at the wheel of a supercar.