2013 saw some clever concept cars which drew upon sophisticated but also stunningly simple ideas. Toyota's versatile, electric ME.WE. was clad with light, interchangeable polypropylene body panels, while Citroen's Cactus featured polypropylene body panels covered with a soft skin to protect its bodywork. Pininfarina revealed the spectacular Sergio concept, as a tribute to the company's President who passed away last year, while Nissan unveiled the BladeGlider, inspired by -- you've guessed it -- a glider and Mercedes gave us the awesome AMG Vision Gran Turismo, designed specifically for the latest version of the ever-popular PlayStation game -- Gran Turismo 6. Music licensed by www.akmmusic.co.uk - Track: 'Aim High'