Carbon fiber has a bunch of desirable properties, but I don't believe that absolute thickness (thinness) is generally considered one of them. As far as I know

Carbon fiber has a bunch of desirable properties, but I don't believe that absolute thickness (thinness) is generally considered one of them. As far as I know the most common uses for carbon fiber are when light weight and high strength are needed, such as in aerodynamic panels on race cars -- nobody cares if the panel is .5mm or .5in, so long as the outer surface is the right shape and the weight is as low as possible. If my understanding is correct, these attributes are counter to one of the key goals of the MB Air (the goal of being as thin as practical). It will be interesting to see the exact CF weave and resins they select as a compromise.