I remember doing a post crash management course which bedeviled the properties of Man Made Fibres in the post crash environment especially in fire. But lets be patently honest here, F1 cars crash at ridiculously high speeds and the drivers walk away.
The majority of materials contained within the cabin attribute a vast amount of toxic fumes to the cocktail. Even in an aluminium tube.
The impact survivability of Carbon Fibre structures has been proven to be greater that that of aluminium due to the ability of the composite structure to absorb the impact energy whereas the aluminum deforms.
We all pray that a crash will never occur, however the global pressure from ill informed Governments and environmental groups forces more and more towards lean, light and efficient aircraft. The industry cannot stay in the 60's.
Personally I look forward to flying it