ScienceDaily is reporting that the self-healing materials are being used in some new aircraft designs -- http://www.sciencedaily.com/releases/2008/05/080519105052.htm

"This simple but ingenious technique, similar to the bruising and bleeding/healing processes we see after we cut ourselves, has been developed by aerospace engineers at Bristol University, with funding from the Engineering and Physical Sciences Research Council (EPSRC). It has potential to be applied wherever fibre-reinforced polymer (FRP) composites are used. These lightweight, high-performance materials are proving increasingly popular not only in aircraft but also in car, wind turbine and even spacecraft manufacture. The new self-repair system could therefore have an impact in all these fields."

 The plane will heal itself after a crash. Great for the plane, not so much for the passengers.