It's the biggest make-or-break ever at Jaguar since its remarkable turnaround the past few years. The company has had great success with its sedans & sports cars holding their own against counterparts from the German three. But now it's going to get into the volumes segment with the XE, and take on the mighty 3 Series, C-Class and A4. It's the new all-aluminium architecture that's spearheading this plan. We travel to Jaguar HQ, and bring you some exclusive details.