ASTON MARTIN DBX CONCEPT CHALLENGES CONVENTION 3 March 2015, Gaydon: Aston Martin today challenges the nature of luxury GT travel in the 21st Century with the debut at the 85th Geneva International Motor Show of the innovative DBX Concept. Created to defy conventional thinking about the luxury GT segment, the DBX Concept widens the appeal of the iconic British luxury brand and reaches out to a more diverse global audience than ever…