Re: What metals are used in the Xfire?
"The foundation for creating a car with responsive sports coupe handling combined with a supple ride is a stiff bodyshell. Crossfire’s all-steel shell boasts exceptionally torsional rigidity (20,140 Nm/deg) and has been specially reinforced to bear the loads and forces generated by the unusually large wheels and tires. The fixed-roof coupe styling, sweeping rear pillars and tall bulkhead separating the passenger compartment from the luggage area, play key roles in the overall structural stiffness of the bodyshell and in its resistance to side impacts."
Never mind. That answers that!