Wednesday on Fifth Gear: SLS AMG vs. Aston, Bently and Jag in a Knockout Tournament!

Tiff Needell and Jason Plato hold a knock-out tournament to see if the 570hp Mercedes SLS AMG can beat its rivals from Aston Martin, Bentley and Jaguar. Jonny Smith meets Swedish rally legend Stig Blomquist for some ice driving lessons in the new Audi A1 Quattro, and reveals the five best mobile phone apps for petrolheads. Vicki Butler-Henderson learns the secrets of a German company that armour plate cars for the likes of the UN.