Carbon Fiber can be constructed to break apart in order to dissipate energy on high impact collisions. Just look at this year's Canadian Grand Prix to see the results of Carbon Fiber in a crash. It contributed to saving the life of a driver. The parts that were supposed to break away did. The parts that weren't did not. If I'm falling out of the sky in a jet, the last think on my mind will be reviewing the finer points of the composite construction of the plane.