photo: Fourtitude (drawing), Audi AG (Cross Cabriolet quattro) It appears that Audi is working on its own unique approach to a crossover-based Cabriolet. With models such as the Q5 and Q7 now Audi of America's top sellers (and crossovers red hot the world over), the idea of convertible versions was probably a foregone conclusion. As is typical of the brand of the four rings, Ingolstadt aims to create their own tech in order to create their own take on a planned market entry. This simplist...