From BBC News:

A material that is able to self-repair even when it is sliced in two has been invented by French researchers.

The as-yet-unnamed material - a form of artificial rubber - is made from vegetable oil and a component of urine.

This could have a huge impact commercially. I can think of three or four products that would benefit from this right off the top of my head: Tires (no more worrying about that pesky nail you just ran over), shoe soles (or hell, even whole shoes [no more resoling your shoes or worrying about you soles flapping around in the breeze]), the list goes on.

This marvel of technology has potential (was that a bit over the top?).

More here.