Fuel lines and tranny cooling lines near heat can be a problem and have created some fire in 928's because of age related issues. But on an enzo and other relatively new vehicles old rubber should not be an issue. Un burnt fuel from a mis-firing engine into hot cats another cause but again probably not here.

There is something else going on with these cars, not very comforting considering the cost. and everyone should carry an extinguisher, one 928 owner even has a halon injection system for his engine compartment.